A fecal examination is used for which of the following?

A fecal examination is primarily used for identifying parasite infections. This procedure allows veterinarians to analyze fecal samples for the presence of various gastrointestinal parasites, such as worms and protozoa. By examining the fecal matter under a microscope or through other testing methods, veterinarians can pinpoint specific types of parasites affecting an animal, which is crucial for determining the correct course of treatment.

While assessing hydration levels, detecting viral infections, and evaluating digestive function are important aspects of veterinary medicine, they are typically evaluated through different methods. Hydration levels are often assessed through physical examination and blood tests rather than fecal analysis. Viral infections may require blood tests or specific viral cultures, rather than fecal examinations, to accurately diagnose. Digestive function could be evaluated with other tests, including blood tests or imaging techniques, rather than directly relying on fecal analysis alone. Therefore, identifying parasite infections is the correct use of a fecal examination.