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Why is my senior dog peeing in his sleep and while lying down?

Updated On September 23rd, 2025

Pet's info: Dog | Schnoodle | Male | neutered | 11 years and 7 months old | 17 lbs

My dog is involuntarily peeing in his sleep and while lying down, and I was wondering what the cause of this could be? He's 12 years old and has a heart murmur.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 4th, 2019

Is Sam on any medication for his heart murmur, such as diuretics? That would make him need to pee more often, and could cause him to pee in his sleep and while laying down. It could also be a medical condition. I would have him seen by his vet for this problem.

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