Petco Text Logo
Petco Pet Logo

Cat tired, not eating, and has bumps after vaccinations. Is it okay?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 8 years old | 12.2 lbs

I had my 8 yr old cat (short hair taby) had his distemper & rabies vaccinations on Thursday. Yesterday and today he is showing less energy. Decreased appitite for food, but drink some tuna water and will eat treats. Keeping an eye on water intake and outtake , seems fine so far. He still has bumps on inj. sites on front & back shoulders. Don't want to overlook anything I should notice. TY, Shawn

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on July 16th, 2017

Hi Shawn! You can see some lethargy up to 48 hours after a cat gets it's vaccines, and this is normal. It is concerning that Bugsy Malone (love his name!) is eating less, but hopefully he is eating something. Try to tempt him to eat with some boiled white meat chicken (no bones), or by soaking his dry food in tuna juice. The bumps will be localized reactions to the vaccines, and should disappear in a few weeks. If he is still lethargic and eating less tomorrow, then I would take him back into the vet for an exam. I hope this helps!

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored