never. He's fallen in a couple of times but that's only because we're in the pool and spraying him with water, making the poolside wet and slippery. If he's running too fast, he'll slide in. But again, we're both always there to grab him. He actually can swim a little. Doesn't like it but he floats fine. He prefers to be "carried" in the water. But then he's a pug.
Louie and Chamuco of Pug Hill