Cats are unique, given the fact that most do not show symptoms of illness until they are in the later stages of a life-threatening disease or infection. Knowing your cat and spending time with him or her to understand their water drinking habits, eating, bathroom and sleeping routine will be a valuable asset in knowing the minute their behavior changes. When it does, it's best to bring your feline to the veterinarian office for a checkup and blood work. If there is a lack of eating, getting an x-ray is an added benefit to see what's going on--possible obstruction of a toy, rubber band, or something lying around like a piece of plastic they might have swallowed.
CatCuddles wants to offer cat lovers an initial guide into researching topics of diseases and illnesses so you can ask questions when taking your cat to the vet. We recommend bringing them sooner, rather than later, since later means something has usually been happening longer than we think already.