Petco Text Logo
Petco Pet Logo

Why is my playful puppy's poop runny, but the first one is okay?

Updated On September 23rd, 2025

Pet's info: Dog | Whippet | Female | unspayed | 1 month and 23 days old

Our new puppy has an upset tummy. It was runny all the time, but now the 1st poop of the day is okay and then goes runny. I brought something recommended by pet shop (paste that i give her twice a day). She's playful and 'happy'... eating and drinking, but still upset?

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Paula Simons

Veterinarian

Published on November 16th, 2021

The most common cause of diarrhea in a young dog is gastrointestinal parasites. I would recommend submitting a stool sample to your vet for analysis. I would also recommend only feeding a single puppy diet and eliminating treats and bones until the diarrhea resolves. If it still does not improve, further evaluation by a vet is warranted.

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