Why does a dog poop in the pool?

A dog may poop in a pool due to a lack of proper bathroom training or an inability to hold its bowels, especially if the dog is excited or anxious. Additionally, the pool environment may confuse the dog, leading it to think it's an acceptable place to relieve itself. It can also happen if the dog has an upset stomach or is experiencing stress from the water or surrounding activity. Ultimately, it reflects the dog's instinctual behavior rather than a deliberate choice.