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Why is my 12-week puppy constantly pooping thin, stringy stool?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | unspayed | 3 lbs

My puppy is around 12 weeks old and is pooping nearly constantly and sometimes even without stopping, like she doesnt even know shes doing it. Her poo is coming out thin, short, soft and stringy and im not sure whats causing this but its making potty training nearly impossible. She even goes in her crate and sometimes when shes playing with us on our lap.

1 Answer

Most Helpful Answer

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Answered By Dr. Leigh, DVM

Veterinarian

Published on June 19th, 2017

She could have a parasite or an infection causing the problem. The best thing would be to have her examined by a vet to determine the exact cause. Your vet can test a stool sample for parasites and then prescribe medications to treat the diarrhea. She may need to a dewormer, antibiotic, or other medications. You could also add a probiotic to her diet and feed a bland diet of boiled chicken and white rice for a few days and see if that helps.

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