Dogs have scent glands all over their bodies, and when they roll in poop, they are essentially spreading their scent around.
Dogs are territorial animals, and they will often mark their territory by rolling in poop.
Some dogs will roll in poop simply because they are excited. This is often seen in puppies, who may roll in poop after playing or greeting someone.
If a dog has itchy skin, they may roll in poop in an attempt to relieve the itch. The poop can help to remove dead skin and hair that is causing the itch.
Some dogs may roll in poop because they are not getting enough baths or grooming.
In rare cases, rolling in poop can be a sign of a medical condition, such as a skin infection or a digestive disorder.
If you are concerned about your dog's rolling in poop, there are a few things you can do to try to stop it.