Ferris loves to swim. Actually, he loves to chase things that are thrown in the pool. We have an above-ground pool, and he'll run around the edge of it (about 6 inches wide) and jump in when he gets close to the ball or whatever. He'll even dive under sometimes to get whatever it is he's chasing. Then he'll play with it on the deck, knocking it into the water and try to get it out again, reaching with his paws or biting at it. He swims pretty good, too, and we're training him to swim to the ladder. It's not easy for him getting up the ladder, though, so we have to help him with that.