Captain Cavedog (Captain Caveman and Son) The Flintstone Kids : Season 2 Episode 22

With help from fellow inmates Piggy McGrabit, Trash Man, Teddy Bear Snatchter, and Yuckster, Mr. Bad escapes from prison. He transforms Captain Caveman into a dog with poisoned hot dogs. Cavey Jr. hunts down Mr. Bad for the antidote and to get him back to prison before the poison causes Captain Caveman to permanently remain a dog.