Petco Text Logo
Petco Pet Logo

Why is my puppy sleepy and not playful after shots and Trifexis?

Updated On September 23rd, 2025

Pet's info: Dog | Australian Cattle Dog | Female | unspayed | 3 months and 10 days old

Hi, I have a 9 week old red heeler puppy who is usually full of energy. She got her first round of shots on Monday along with Trifexis. She has been doing really well up until today. She has been sleeping more than usual and not as playful, no biting or running around. She is eating and drinking with normal looking poop. Should I be super concerned? Can I wait to take her to her vet on Monday?

1 Answer

Most Helpful Answer

Image profile

Answered By Sara Farmer, DVM

Veterinarian

Published on January 11th, 2020

If there are no other symptoms and she is still eating and drinking normally you can probably wait until Monday to have her examined. I doubt the recent vaccines and Trifexis are related. If she vomits or has diarrhea, if she isn’t eating or if she is so lethargic you can’t rouse her you should see an emergency vet.

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