Why is my dog dragging their bum?

Dogs have two small scent glands located just inside their bottom. These glands normally empty when a dog passes a bowel motion, but sometimes they don’t empty properly and can become full, uncomfortable, inflamed, or even infected.
What to do if your cat or dog has diarrhoea

When you adopt from a shelter, you help a pet in need of a safe, loving home, potentially saving them from euthanasia, and creating new space for another animal in need to be cared for in the shelter.