Cat Vomiting Diarrhea Not Eating Lethargic. If you change your cats diet they may not get the nutrition they need and vomiting andor diarrhea may be the result. Even if the cats not.

If a cat is. Or 4 the cat shows signs of systemic illness such as lethargy. If the cat is also not drinking it is in even greater danger.
Gastrointestinal Disturbances - Any condition that adversely affects the stomach or intestine can cause lethargy.
If the cat is also not drinking it is in even greater danger. Vomiting diarrhea dehydration and a reluctance to eat are all known symptoms. Its important to identify why your cat is sick and has stopped eating. Dehydration can occur quickly if the vomiting and diarrhea.

