Petco Text Logo
Petco Pet Logo

Why is my 3-month-old kitten suddenly lethargic and not playing?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Male | unneutered

What is wrong with my kitten? My kitten (3 months old) is acting all weird. I don't know what happened to him. He was all good a few hours ago, jolly and well, but now he doesn't even play with his favourite toy mouse. I'm scared it's something really bad. I love the lil' guy. His eyes aren't even fully open. I don't know if it helps with anything, but I gave him a little bit of milk to drink. He drank some milk, so that might be good?

1 Answer

Most Helpful Answer

Image profile

Answered By Lauren Jones VMD

Veterinarian

Published on August 10th, 2017

Poor Gibby! I know that it can be scary when our four legged friends aren't feeling well. Sudden lethargy and closed eyes could be due to a variety of issues, including head trauma (even falling from furniture), seizures, hypoglycemia (low blood sugar), exposure to toxins, among others. It is encouraging that he was willing to drink some milk. If he seems to be mentally appropriate, try offering him a bit of kitten food to see if he will eat or smear some corn syrup on his gums. If he perks up right after eating, Gibby may have experienced a sudden drop in his blood sugar. If he still seems "off", lethargic, closed eyes, not eating or acting normally, Gibby should go to his vet urgently for evaluation to try to get to the bottom of this issue. I hope that all goes well!

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