How do you bring down a fever in a dog?

I would first verify the cat has a fever - normal body temperature for a cat is 100.5 to 102 degrees F, slightly higher than a human's normal body temperature. If your cat does have a fever, you should keep a very close eye on it to make sure it continues to eat, drink and use the litter box (both urinating and defecating). If any one of those four processes stops, or your cat becomes lethargic and doesn't want to interact with you like it normally does, you need to take your cat to a veterinarian.

Whatever happens, do NOT give your cat human fever reducers (Tylenol, Advil, aspirin, acetominophen, ibuprofen, Aleve, Motrin, etc.) - these are extremely toxic to cats and one pill can be fatal.