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New puppy has soft, watery poop and is thin. Is this normal?

Updated On September 23rd, 2025

Pet's info: Dog | Belgian Malinois | Female | 2 months and 18 days old

I bought a 2 month old belgian puppy yesterday (june 15) and She is so thin. I feed her like 3 cups of topbreed (her food) around 2 in the afternoon and she drinks lots of water. After 3 or 4 hours, her poop is so soft (like watery) until today (june 16). As per my mom her poop is improving but still soft. Is it because of stress or is that something I need to worry about? PS. Her poop is brown in color and has a fish kind of smell. I'm worried. Thank you so much..

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1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on June 16th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Mallows is very cute! There is a period of adjustment for puppies to their new home and to their new food. I think it is encouraging that her stool is improving. Intestinal parasites are very common in puppies and she does need to start her vaccines. I would take her to the Vet to have her stool tested, have her dewormed and get her first DHPP vaccine. If deworming her and time doesn't improve the stool then I would recommend changing her food. Have a great day!

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