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Is it normal for a dog to pee, poop, and get stiff after death?

Updated on September 23rd, 2025

A few years ago my dog cassie was hit by a car and died instantly but what I found weird was as she was laying there she started peeing and pooing even though she was dead why did this happen they pee and poo seemed endless even as my dad was carrying her away to bury her she was still peeing and her legs went completely stiff and her head also went stuff that made it very hard to put her in a box 1: why did she pee and poo so much 2; why was she stiff

1 Answer

Most Helpful Answer

Rosemary Barber, DVM

Answered By Rosemary Barber, DVM

Veterinarian

Published on April 24th, 2017

Hi! Sorry to hear about Cassie.
It is normal for a pet to pass urine and stool after dying. The urine and stool that are normally held inside the body passively leave the body, as all of the body sphincters relax. Stiffness is a natural process after death as well, which is called rigor mortis, which is caused by chemical changes in the muscles after death.
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