Petco Text Logo
Petco Pet Logo

My puppy is lethargic. When do parvo vomiting/diarrhea start?

Updated On September 23rd, 2025

Pet's info: Dog | Lhasa Apso | Male | unneutered | 2 lbs

Is diarrhea or vomiting seen on the first day of parvo apart from lethargy? Pixel is 2 months old and pretty inactive today than normal. Can it be bcos of the weather as well? As it rained + winters so he has been sleeping.I am pretty worried. When should vomiting or diarrhea be seen? He has got 6-1 combination shot and tomorrow is his second vaccine. When are symptoms like vomiting/diarrhea seen?

1 Answer

Most Helpful Answer

Image profile

Answered By Megan, DVM, CVA

Veterinarian

Published on February 1st, 2019

Vomiting and diarrhea can be seen on the same day or even a day or two after the lethargy. Every case is a little different. If he isn't eating, lethargic and you are concerned, I would have your vet take a look at him as soon as possible. They may want to test him tomorrow or run additional tests if he isn't feeling well instead of giving him his next vaccine. The weather isn't likely going to cause a lot of lethargy. I hope this helps and he starts to feel better soon.

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