Although diarrhea can be prevalent in animals if it is mild or lasts for only a few days. However, severe diarrhea can be very dangerous. In cats, diarrhea can be caused by many reasons. The most common causes could be diet/ dietary allergy or pathogenic infection caused by various infectious agents. These infectious agents include viruses (such as feline parvovirus), bacteria (such as Salmonella), and parasites (such as Giardia).
In cats, infection of parvovirus attacks and kills cells that are fast-growing and dividing, e.g., cells in the bone marrow, intestines, or even in a developing fetus. The signs of feline parvovirus infection can be very similar to other illnesses; however, the first visible symptoms can be high fever, lethargy, nasal discharge, vomiting, dehydration, and severe diarrhea.
Therefore, a diarrheal infection could signify a parvovirus infection regardless of the cat's age. Bioguard has developed and manufactured a sandwich lateral flow immunochromatographic assay named: Bioguard Feline Parvovirus (FPV) Ag Test for the rapid and qualitative detection of feline parvovirus in cat feces.