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Drs. Foster and Smith Pet Food FAQs


Drs. Foster & Smith Educational Staff
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Have a question about Drs. Foster & Smith pet foods? Click any of the categories below for answers to some commonly asked questions.

Ingredients and Manufacturing

Are your foods complete and balanced?
Yes, Drs. Foster & Smith pet foods provide complete, balanced nutrition for your dog or cat. They meet or exceed the standards recommended by AAFCO. Sources of quality protein, fats, fiber, carbohydrates, vitamins, and minerals have been carefully selected and included in the correct amounts to provide optimal nutrition.
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While Drs. Foster & Smith pet foods are complete and balanced, they cannot take into consideration the unique nutritional needs of every pet. Supplements have shown to be effective and beneficial for: pregnant pets, lactating pets, extremely active adult pets, senior pets, pets with health problems (allergies, joint problems, and so on), and stressed pets. If you're not sure whether to give your pet a supplement, contact your veterinarian.
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Do your foods contain real meat?
Yes, Drs. Foster & Smith pet foods contain high-quality, highly digestible protein sources as the first or second ingredient. Protein sources include: real chicken meat; real hormone-free lamb meat; and real ocean whitefish, salmon, and herring. Like many of the country's leading pet nutritionists, we believe real meat offers the best source of quality, highly digestible protein.
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What is the source for the meat used in your cat and dog foods?
The chicken used in Drs. Foster & Smith dry cat and dog foods is hormone and steriod-free and comes from USDA-inspected facilities. The lamb used in Drs. Foster & Smith dry cat and dog foods comes from Australia and New Zealand; it is hormone and steriod-free. It is also considered free of Bovine Spongiform Encephalopathy (BSE) and is the only lamb source accepted by European Community countries.

The chicken used in the Drs. Foster & Smith canned cat and dog foods comes from Canadian food processing facilities and is hormone and steriod-free. The lamb used in Drs. Foster & Smith canned cat and dog foods comes from Australia and New Zealand and is hormone and steriod-free. Like the lamb used in the dry food, it is considered BSE-free, and is the only lamb source accepted by European Community countries. Chicken meal is purchased from USDA-approved plants and is hormone and steriod-free. Fruits and vegetables are also purchased from USDA-certified vendors.
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What part of the chicken is used in your food?
The chicken meat used in Drs. Foster & Smith cat and dog foods is the clean combination of flesh and skin with or without accompanying bone derived from the parts or whole carcass of the chicken. It does not include heads, feet, feathers, or intestines.
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What are chelated minerals?
Chelation refers to the process of stabilizing a metal ion by binding it to certain other chemical substances, usually amino acids or organic compounds. When a mineral is chelated for use as a supplement or food ingredient, it is usually bound to an amino acid or protein.

Whether a mineral is better absorbed by the body when it is in a chelated form depends upon the mineral. Scientific studies have shown that the chelated organic forms of selenium, chromium, and iron are more available than inorganic forms. With other minerals, such as zinc and copper, studies have indicated a similar availability with both the chelated organic and inorganic forms. For some minerals, such as calcium and magnesium, the absorption of the unbound elemental form of the mineral is excellent, making chelation unnecessary.

It is important to note that the availability of minerals is also influenced by other factors, such as excesses of other minerals in the diet, and the amounts of fiber and certain other substances present.

For now, when comparing mineral sources between pet foods, we recommend choosing chelated forms of zinc, chromium, and iron whenever possible. When considering other minerals, both forms may be helpful, but chelated minerals may not be better absorbed than other minerals.
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What are fermentation products?
Fermentation products are certain bacteria which are naturally present in a pet's digestive system. They aid in digestion, and are the same bacteria used in yogurt with active cultures. For use in pet food, these helpful microorganisms are grown in a broth culture, then freeze-dried to maintain their viability. The freeze-dried product containing the inactive microorganisms is applied to the outside of the kibble during the enrobing process (the final step of manufacturing). The microorganisms are activated when they are hydrated in the digestive tract.
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Is the lamb meat in the canned food hormone and steriod-free?
Yes. We obtain our high-quality lamb from a supplier who certifies that it is hormone and steriod-free. Each shipment of lamb comes with a certificate from the producer confirming the lamb is hormone and steriod-free.
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What part of the lamb is used in your food?
The lamb meat used in Drs. Foster & Smith cat and dog foods is the skeletal muscle of the lamb (sheep less than or up to one year old). It may include muscle from the tongue, esophagus, diaphragm, or heart. It does not include hair, horns, teeth, or hooves.
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What is the difference between lamb and lamb meal?
Lamb is the skeletal muscle of the animal, and may include some smooth and heart muscle as well. Lamb meal is produced by cooking and drying lamb tissues, then grinding the product into a meal. Both are highly digestible, delicious protein sources with essential amino acids, essential fatty acids, and minerals.
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What percentage of meat is in your canned dog and cat foods?
Canned Chicken & Brown Rice Formula dog food contains 92% meat.
Canned Lamb & Brown Rice Formula dog food contains 90% meat.
Canned Fish & Potato dog food contains 93% fish.

Canned Chicken Formula cat food contains 94% meat.
Canned Turkey Formula cat food contains 94% meat.
Canned Chicken & Fish Formula cat food contains 95% meat.
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Dogs and cats are carnivores. Why are there vegetables, fruits, and grains in Drs. Foster & Smith foods?
Wild carnivores will ingest the contents of the digestive tracts of their prey. These contents commonly include many types of plant materials. Cats and dogs, too, will obtain essential nutrients from fruits, vegetables, and grains that are not present in meats or animal sources. These nutrients include vitamins, minerals, antioxidants, fiber, and other carbohydrates used as energy sources. In addition, a certain level of carbohydrates must be added during the manufacturing process of dry food in order to form a solid kibble.
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What is the source for your fruits and vegetables?
Fruits and vegetables are purchased from USDA-certified vendors, and are the same quality as those purchased at grocery stores.
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Do your foods contain fatty acids? In what ratio?
Yes, Drs. Foster & Smith pet foods contain Omega-6 and Omega-3 fatty acids, generally in a ratio close to 5:1 ratio. These fatty acids are derived from sources such as sunflower oil (Omega-6), whole ground flax seed (Omega-3), and marine fish oils (Omega-3).
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Do your foods contain antioxidants?
Yes. Antioxidants are present as natural preservatives (mixed tocopherols and rosemary); as vitamins, such as Vitamin E, Vitamin C, and Riboflavin; and from natural sources such as carrots, sweet potatoes, apples, tomatoes, cranberries, and blueberries.
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Do your foods contain artificial colors, flavors, or preservatives?
No, Drs. Foster & Smith pet foods do not contain artificial colors, flavors, or preservatives. The food color and flavor are the result of the natural ingredients in each unique formula. Drs. Foster & Smith foods are preserved with natural preservatives such as Vitamin E, rosemary, and citric acid.
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What quality control procedures are used in the production of your food?
Ingredients are checked and tested as they arrive at the plant. Multiple quality control procedures are performed during processing of each run. The final product is checked and analyzed. Warehouse and packaged food are checked, and trucks inspected before loading. Learn more about our quality control/quality assurance process.
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What is the carbohydrate percentage in each diet?
The carbohydrate percentage can be roughly calculated by subtracting the percentages of protein, fat, fiber, and moisture from 100%.
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Why is ash included in your cat foods?
Ash, in some amount, will be present in any cat's diet since it is made up of essential minerals your cat needs including calcium, phosphorus, sodium, potassium, magnesium, and manganese. Ash is actually the inorganic material that remains from burning a measured food sample at 600°C for two hours. Ash was once thought to be the cause of urinary tract disease in cats. Researchers now agree that this is not the case. The levels of specific minerals such as calcium and magnesium, and the pH of the urine can play a role in certain urinary tract diseases. Mineral levels and pH values that are too high, or too low, can contribute to disease. Drs. Foster & Smith healthy cat foods have been formulated to contain the proper amount of minerals and produce a urine pH within the recommended range.
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What is the difference between zinc proteinate and zinc amino acid complex?
Different manufacturers may label their mineral supplements as "zinc (or iron, copper, manganese, etc.) proteinate" or as "zinc (or iron, copper, manganese, etc.) amino acid complex." Mineral supplements labeled "proteinate" or "amino acid complex" are all in chelated form. These supplements are all essentially the same, except of course for the specific mineral they contain.
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What is the difference between thiamine mononitrate and thiamine hydrochloride?
They are two different forms of thiamine (Vitamin B1). Both are commonly used in food and in vitamin supplements, and both are well absorbed.
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What is L-Carnitine? Why is it added to your new Chicken & Brown Rice Formula Adult Lite Dog Food?
L-Carnitine is an amino acid derivative that is thought to help increase lean body mass and decrease fat. This can be helpful during weight loss, when we want pets to lose fat but retain lean muscle.
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What is casein and why is it in your new Chicken & Brown Rice Formula Adult Lite Dog Food?
Casein is milk protein, such as that found in cottage cheese. Casein contains 80% protein, and is one of the highest-quality proteins available.
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The nutrient analysis for your dry kitten food says, "copper (extruded)". What does this mean?
Extrusion is a method of manufacturing dry pet food. Separate copper requirements are recommended for extruded cat foods (15 ppm) vs. moist cat foods (5 ppm) during growth/reproduction. The recommended AAFCO copper level for maintenance of adult cats is 5ppm, regardless of the form. (Note: ppm=mg/kg).
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How does the fiber in your new Hairball Control Adult Cat Food help to remove hair?
Our Hairball Control Cat Food contains a higher level of fiber than either our Adult Cat or Adult Cat Lite foods. This extra fiber helps to gently move hair through the digestive tract so that it is eliminated before it can build up and cause a problem.
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What is AAFCO?
AAFCO stands for the American Association of American Feed Control Officials. AAFCO is comprised of state and federal officials who enforce the laws regulating the production, labeling, distribution, and/or sale of animal feeds. The Official Pet Food Regulations are published annually in the AAFCO handbook. Each state can adopt the Official Pet Food Regulations as published in the handbook, or set its own. Many states have elected to use the Official Pet Food Regulations, or have set up regulations very similar to them.

AAFCO regulations for pet food include requirements regarding product names, flavor designations, guaranteed analysis, nutritional adequacy statements, proper ingredient names, and other aspects of labeling. The organization also provides test requirements or protocols for manufacturers so that they can meet state requirements for proof of safety and nutritional quality before a pet food is marketed.
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How is dry pet food manufactured?
Dry foods are most commonly made in a process called extrusion. However, they can also be baked or pelleted. In the extrusion process, raw materials are first ground to the correct particle size (usually the consistency of coarse flour). Grinding increases the availability of nutrients, as well as the ease with which they are processed. The ground ingredients are then mixed to create a consistent product, ensuring that essential nutrients are correctly balanced in each individual piece of the finished product.

The mixed dry ground materials are then extruded, a process that includes mixing, kneading, proofing (rising), shaping, rising again, and slicing. The dry mix is first preconditioned to start the gelatinization of the starches. The preconditioner very accurately measures the amount of the dry mix and blends it with the measured liquid portion that can include fat, meat products, additional water, and steam. This wet mix stays in the preconditioner for about 45 seconds. While in the preconditioner, the starch is cooked about 25%. The preconditioned food then moves to an extruder, a cylindrical multi-segmented barrel that propels, mixes, and further cooks the material, and then forces it through a die where it is cut to the desired length. The product moving through the extruder produces its own friction and heat, which then cooks the mix. The speed and friction levels can be varied depending on the formula, to ensure that the product is cooked at the correct temperature for the right length of time.

The newly formed, soft and spongy kibbles are then transferred from the extruder to the dryer where additional moisture is removed. Most kibble takes about 15 minutes to dry properly. If kibble is dried too quickly or at too high a temperature, it will be more fragile and break during handling.

The kibble then goes through a cooling process of around 7 minutes. If the kibble is too hot when it leaves the dryer and is packaged before it cools, condensation will develop, which will encourage the growth of mold or bacteria in the package.

Enrobing, the last step in the manufacture of dry pet foods, entails the addition of either liquids or powders to the outer surface of the kibble. Fat and flavor enhancers are usually added at this stage. Fat is not usually added in the mixing stage because it can disrupt starch gelatinization. Fat and flavor enhancers greatly improve taste and palatability, and are most effective when applied to the outside of the kibble.
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How is canned food manufactured?
Most canned pet foods contain a high level of meat products as their base. The meat product is first ground into small pieces, then carefully weighed and added to a batch mix that also includes vitamins, minerals, and sometimes grains.

After the ingredients are combined, they are thoroughly blended in a mixer. During mixing, the temperature is increased so that starch in the food begins to gelatinize and protein begins to denature. This greatly improves texture and flavor. Once the product has been properly cooked, it then moves to the canning process.

While the cooked mixture is still hot, the product moves into the filler/seamer machine. This machine fills, places the lids on, and seams from 300 to 600 cans a minute. Steam is blown over the top of the filled can as the lid is applied to maintain the heat, so that when the can cools, it will be vacuum-sealed to help prevent spoilage.

Once the cans are filled and sealed, they move into a sterilizer where they are heated to temperatures of 121° Celsius for at least three minutes. This ensures that dangerous bacteria, such as Clostridium botulinum, are killed. Once the cans have been properly sterilized, they are cooled, labeled, and ready for sale.
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How are pet foods preserved?
Pet foods are either preserved with natural preservatives such as tocopherols (Vitamin E), citric acid, rosemary, and Vitamin C, or artificial (chemical) preservatives such as BHA, BHT, and ethoxyquin. Drs. Foster & Smith foods have no artificial preservatives.
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Types of Foods

Do you offer a weight-loss formula for dogs?
The Drs. Foster & Smith family of pet foods includes a "lite" formula for dogs. This balanced, calorie-restricted diet can be an integral part of a weight-loss program. When fed according to directions, it will also help keep weight off and prevent weight gain while maintaining good nutrition.
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How can your new Chicken & Brown Rice Formula Adult Lite Dog Food help my dog to lose weight?
This food contains cellulose and beet pulp to provide higher levels of fiber, and has reduced calorie levels to help your dog lose weight without feeling deprived. Another ingredient, L-Carnitine, is thought to increase lean body mass and decrease fat. This is especially helpful during weight loss, when we want pets to lose fat but retain lean muscle.
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Why does your Adult Lite Dog Food contain higher levels of minerals than your regular Adult Dog Food?
Our Adult Lite Dog Food contains extra fiber to help with weight loss. Higher levels of fiber can sometimes cause decreased absorption of minerals. In order to protect against this, we have added extra amounts of minerals to our Adult Lite Dog Food.
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Do you offer a weight-loss formula for cats?
The Drs. Foster & Smith family of pet foods includes a "lite" formula for cats. This well-balanced, calorie-restricted diet can be an integral part of a weight loss program. When fed according to directions, it will also help keep weight off and prevent weight gain while maintaining good nutrition.
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Why is your Hairball Control adult cat food labeled "Advanced?"
This formula has been developed to be high in natural fiber to minimize hairball formulation. It contains high quality protein, vitamin A, and fatty acids to help maintain healthy skin and hair coat, and to decrease excess shedding. Chelated minerals help ensure good nutrient absorption. Increased levels of high-quality protein help to maintain good muscle tone. Probiotics and higher fiber levels also maintain a healthy digestive system.
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Should I expect my cat to drink more water if he's eating your Hairball Control formula food?
While we would not expect a cat to drink excessive quantities of water while on this food, your cat must continue to drink an adequate amount of water to prevent constipation often associated with a high-fiber food.
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Why don't you offer a fat-free pet food?
Consuming excessive amounts of fat has been shown to cause health problems in both animals and humans. However, fat is an essential nutrient required for good health. Even pets on a calorie-restricted diet need some fat. Without fat in the diet, your pet would soon become deficient in certain vitamins, essential fatty acids, and other nutrients. Pets should receive a healthy level of fat for their age, body condition, and activity level. Quality, balanced, healthy pet foods are specifically formulated to provide the correct amount of fat and other nutrients for a pet's life stage.
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What is the shelf life of your food?
Each bag and can of pet food is stamped with a "Best Before" or "Best If Used By" date. This date effectively represents the shelf life of each individual bag or can of food. Proper storage away from heat, light, and humidity will help to ensure that your pet's food remains fresh, nutritious, and delicious up to that date. Canned food that has been opened should be stored in an airtight container, refrigerated, and used within 2-3 days of the date it was opened.
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How should food be stored?
Heat, light, and humidity are the natural enemies of pet food. To best avoid all of them and keep your pet's food fresh and delicious, we recommend storing bagged food in the original bag with the top tightly rolled down inside an air-tight container. If at all possible, avoid storing your pet's food in a humid environment such as a basement or laundry room. Partially used canned food should be tightly covered and refrigerated immediately.
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Feeding for Different Ages and Special Conditions

Are any of your cat foods recommended for cats with urinary tract disease?
There are many types of urinary tract disease (FLUTD, bladder infections, bladder stones, etc). There is no one food that is recommended for all cats with urinary tract disease. If you need a cat food with a certain pH level, Drs. Foster & Smith Adult Cat Dry Chicken & Brown Rice Food (with a urine pH of 6.42) or Drs. Foster & Smith Chicken and Brown Rice Adult Lite Dry Cat Food (with a urine pH of 6.32) may be appropriate. For questions about other urinary tract disease concerns, we recommend you consult your cat's veterinarian.
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Do you offer a food for dogs suffering from: diabetes, pancreatitis, kidney disease, or liver disease?
If your dog has a medical condition that could be managed with diet, discuss with your veterinarian the option of feeding one of the Drs. Foster & Smith formulas. We will be happy to send you a complete analysis of any of our foods. If your dog has any health or medical problems, be sure to consult your veterinarian before changing your dog's diet.
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Are your foods appropriate for dogs with allergies?
Drs. Foster & Smith pet foods contain natural ingredients, natural preservatives, natural colors, and natural flavors which typically agree with pets' dietary and digestive needs. If your pet is highly sensitive to an ingredient, you should consider a true, hypoallergenic food. If your pet has allergies and you're not sure which food to feed, seek professional veterinary advice.
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Can Drs. Foster & Smith puppy food be used for pregnant or lactating (nursing) dogs? If so, how much should I feed?
Yes, Drs. Foster & Smith puppy food is appropriate for pregnant or lactating dogs.

PREGANCY: Your adult dog should eat a healthy adult pet food such as Drs. Foster & Smith Chicken & Brown Rice formula or Lamb & Brown Rice formula prior to breeding, to ensure optimal health before pregnancy. Continue feeding Drs. Foster & Smith adult dog food for the first few weeks of pregnancy. Starting the fourth week of pregnancy, begin adding Drs. Foster & Smith Chicken & Brown Rice formula puppy food to her diet. Each week increase the amount of the puppy food and decrease the amount of adult food, so when she is in her final week of pregnancy, she is eating all puppy food. Increase the frequency of the daily meals to three by mid pregnancy. She may need to eat small meals every 3-4 hours during the last week of the pregnancy as the puppies continue to take up more room.

LACTATION: Within 2-3 days of giving birth, your dog's appetite will dramatically increase to 2-4 times her pre-pregnancy intake. She will need a near-constant supply of Drs. Foster & Smith Puppy Formula Food and water to maintain her weight and health while feeding the puppies. She should still have her vitamin/mineral tablet, and you can add cottage cheese, or cooked egg depending upon your veterinarian's recommendations. If her weight is properly maintained, she should not look gaunt or thin. Ideally, she should weigh the same at the time of weaning as she did when she was bred.

ADDITIONAL INFORMATION: If you didn't start a vitamin-plus-mineral supplement before breeding, start it when she is found to be pregnant. Do not over-supplement, as that may be harmful to the developing puppies or the mother. Over-supplementing with calcium during pregnancy, for example, predisposes the mother to a disease called eclampsia.

Some breeders add cottage cheese or a cooked egg to the diet on alternate days for extra protein. If you are adding multiple supplements or other foods to the diet, make a list of all the ingredients, gather nutritional labels, and take everything to your veterinarian to make sure it is balanced. Poor diets and incorrect supplementation may cause problems with the developing fetuses and with the mother.
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Can Drs. Foster & Smith kitten food be used for pregnant or lactating (nursing) cats? If so, how much should I feed?
Yes, Drs. Foster & Smith kitten food is appropriate for pregnant or lactating cats.

PREGNANCY: Your adult cat should eat a healthy adult pet food such as Drs. Foster & Smith Chicken & Brown Rice formula prior to breeding, to ensure optimal health before pregnancy. Continue feeding Drs. Foster & Smith adult cat food for the first few weeks of pregnancy. Starting the fourth week of pregnancy, begin adding Drs. Foster & Smith Chicken formula kitten food to her diet. Each week increase the amount of the kitten food and decrease the amount of adult food, so when she is in her final week of pregnancy, she is eating all kitten food. Increase the frequency of the daily meals to three by mid pregnancy. She may need to eat small meals every 3-4 hours during the last week of the pregnancy as the kittens continue to take up more room.

LACTATION: During the last week of pregnancy and the first 3-4 weeks of lactating, your cat may eat 1½-2 times the amount she ate before pregnancy. She should receive the food as long as she gains a healthy amount of weight without becoming obese.

ADDITIONAL INFORMATION: If you didn't start a vitamin-plus-mineral supplement before breeding, start it when she is found to be pregnant. Do not over-supplement, as that may be harmful to the developing kittens. If you are adding multiple supplements of foods to the diet, make a list of all the ingredients, gather nutritional labels, and take everything to your veterinarian to make sure it is balanced. Poor diets and incorrect supplementation may cause problems with the developing fetuses and the mother.
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How long should I feed my puppy Drs. Foster & Smith puppy food?
Drs. Foster & Smith puppy food is recommended for small- and medium-breed puppies up to 12 months old. Large-breed and giant-breed puppies may continue to eat Drs. Foster & Smith puppy food until 18 months of age.
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Can I feed the adult food to my senior dog?
In general, if your senior dog has no medical problems, is not overweight, and is active, your dog may remain on the Drs. Foster & Smith Adult Dog Formula Food. The Senior Formula has fewer calories, more fiber, and less calcium and phosphorus than the Adult Formula. If you have questions regarding which food to feed your senior dog, seek veterinary advice.
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What is the urine pH of cats fed your cat food?
The recommended urine pH in adult and senior cats to reduce the risk of Feline Lower Urinary Tract Disease (FLUTD) and struvite bladder stones is 6.2-6.5. Drs. Foster & Smith Chicken and Brown Rice Adult Dry Cat Food has an average urine pH of 6.42. Drs. Foster & Smith Chicken and Brown Rice Adult Lite Dry Cat Food has an average urine pH of 6.32. Both foods have an average urine pH well within the recommended range.
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My pet has done well on the food I currently feed; should I try your food to see if my pet fares better?
If your pet seems to be in overall good health with a healthy energy level, bright eyes, shiny coat, and soft skin, the food you're feeding may be adequate to maintain adequate health. However, your pet may be missing some nutritional elements available in our foods - even though you may not be able to see the effects of what may be lacking in your pet's diet. You may want to try a small bag of one of our foods to see if your pet appears to benefit from our healthy ingredients. Be sure to switch your pet's food gradually to avoid stomach upset.
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Use Of Supplements

Can I give supplements with Drs. Foster & Smith food?
Supplements such as Drs. Foster and Smith joint products and skin and coat products are compatible with our food. You can also use a daily multivitamin supplement when feeding Drs. Foster & Smith Pet Foods. Other supplements, such as calcium and phosphorus or urinary acidifiers may not be appropriate. Seek veterinary advice before giving these types of supplements with Drs. Foster & Smith Pet Foods.
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Should I give a vitamin or other supplement with Drs. Foster & Smith pet food?
Pets are just like people…they're all different, and they all require different levels of vitamins, minerals, fats, protein, fiber, and so on. While Drs. Foster & Smith pet foods provide the nutrients pets need, they cannot take into consideration the unique nutritional needs of every individual pet. Simply put, no single food will be the right food for every pet at every life stage. Puppies/kittens, pregnant pets, lactating pets, older pets, hard-working pets, and pets with medical conditions all have different nutritional requirements. Supplements can help fulfill these requirements and promote optimum health. Read more about supplementing your pet's diet.
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Do I still need to give a joint supplement if feeding the senior food?
You should continue to use a joint supplement for a pet with hip dysplasia or arthritis.
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If I'm feeding your Hairball Control formula, should I continue to use a hairball remedy?
If you are feeding the Hairball Control formula, you generally should not need to continue using a hairball remedy. Possible exceptions may include longhaired cats, or during times of the year when your cat is shedding excessively.
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If I'm feeding your Hairball Control formula, is it safe to also use your supplements (such as Joint Care, Vitacaps and Vita-MinTabs?)
Yes. Any of our Drs. Foster & Smith supplements may be safely given with any of our Drs. Foster & Smith foods.
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Can I give a urinary acidifier with your food?
Consult your veterinarian before using a urinary acidifier with any food. Urinary acidifiers can actually make some urinary conditions worse. When using an acidifier, have the pH of your pet's urine checked periodically to make sure proper pH is maintained. Too much acidifier can cause other health problems, and too little may result in the recurrence of struvite crystals or stones.
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Do I need to give a biotin supplement if feeding Drs. Foster & Smith food?
The biotin level in Drs. Foster & Smith pet foods exceeds AAFCO requirements. Some pets, however - due to their individual metabolism or health condition such as allergies - may require a higher biotin level. If your pet has allergies or other skin problems, seek veterinary advice before giving a biotin supplement.
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Feeding Guidelines

The canned food gives feeding guidelines for feeding canned with dry food. To which dry food do those guidelines pertain?
The guideline is an average of the Drs. Foster & Smith Adult Chicken & Brown Rice Formula and the Adult Lamb & Brown Rice Formula. If you feed the dry chicken formula, you may need to feed a little less. If you feed the lamb, you may need a little more. Remember feeding guidelines on a product are only starting points. Your pet's requirements may vary from the feeding guide line due to breed, environment, activity level, and body condition. Adjust food quantities as necessary to maintain optimal weight.
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What is an 8-ounce measuring cup?
An 8-ounce measuring cup is the type of measuring cup used in cooking and baking.
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Why does the label say an 8-oz. cup holds only 3.8 ounces, for example?
There are fluid ounces that measure volume (16 ounces in a pint), and there are ounces that describe weight (16 ounces in a pound). A measuring cup measures volume, but not weight. Eight fluid ounces of water weighs approximately 8 ounces. Pet food, however, is less dense than water. So 8 fluid ounces of food generally weighs approximately 4 ounces.
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Does the amount to be fed in the feeding guidelines pertain to each meal or the daily amount?
It pertains to the total daily amount to be fed. If feeding multiple meals, divide the daily amount accordingly.
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