Tonka and Tonia Haddix, the central pair of Chimp Crazy. Courtesy of HBO As a teenager, I volunteered at a local dog shelter that specialized in taking care of larger dogs. Huskies, German shepherds, pitbull mixes—if it was the kind of dog that could knock you over, there was probably one in the kennels. Dogs from puppy mills and hoarding cases showed up frequently, but a startling amount of...