Thank you for contacting Doctors Foster and Smith with your question.
Many dogs that are allowed to air dry after swimming have a sour or mildew-like smell to their coats. The key to these cases is to be sure that the coat dries quickly. Using a hair dryer on a low setting (like a groomer uses) to dry the coat quickly would work well if this is the situation.
Also, be sure to either bathe the dog or at the very least rinse the pet in fresh water after she comes out of the pond. This can help remove algae, bacteria, etc. that may be in the pond water which may contribute to your pet’s odor.
Another option to consider would be to use a medicated shampoo (a shampoo containing chlorhexidine, for example). A medicated shampoo would also help control bacterial or yeast (fungal) organisms that may cause an odor or infection on your dog’s skin. If your dog is a frequent swimmer and her coat and skin stays wet or moist, there is a possibility of an infection being present (commonly on the skin of the trunk or in the ears).
We also recommend carefully examining your dog for any abnormalities such as hairloss, redness, discharge, or lesions anywhere on the body. If you find an abnormality, we recommend scheduling an appointment with your veterinarian as soon as possible to diagnose the problem and seek an appropriate treatment.
Thanks again for contacting us. We hope this information is helpful.
Drs. Foster & Smith