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Why is my 12-week-old puppy having loose stool and pooping in crate?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 2 months and 24 days old | 35 lbs

My pup is 12 weeks old. He’s been on Fromm grain free puppy food since we got him. Within the last week he’s had loose stool, so the vet prescribed a probiotic. He has been doing well with potty training, going out every 3 hours. But last night and the night before he pooped in his crate. We have no idea why and what’s causing his stool to be loose. No changes in his routine or diet.

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1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on December 1st, 2017

Submit a stool sample to your veterinarian to diagnose intestinal parasites or bacterial overgrowth. Consider a 12-24 hour fast followed by a bland diet in small, frequent amounts until the stool is normal then transition slowly back to the regular diet.

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