Dennis the Dachshund once weighed 59 pounds—pretty healthy if you are four dogs, but Dennis is just one dog—due to his bad diet of "human food and excessive treats." Now he's down to a reasonable 13 pounds thanks to one weird trick (not eating human food and excessive treats).

Iso has taken on a game of fetch, big snow drifts, and now bath time. Watch as he attempts to catch water, perfect his doggy paddle, and get clean in what might be his cutest video yet.