Why is my 5-month-old kitten lethargic, vomiting, and not eating?
Poor Maggie. There are several things that can cause vomiting and lethargy including hairballs, parasites, upper respiratory infection, eating human food, foreign bodies +/- Gi obstruction, certain viral and bacterial infections and much more. I would stop feeding her milk as most cats eventually get to where they cannot tolerate it. I would try to keep her inside so she can rest and offer her different types of food to try and entice her to eat. If she is still refusing to eat tomorrow or the vomiting is continuing, I would have your vet take a look at her. Your vet will be able to do a fecal, blood work and even x-rays if needed. Your vet will be able to get her the proper meds to help her feel better. I hope this helps!
Updated on September 23rd, 2025