While Mickey and Voodoo receive some modest abuse by way of bindings, stompings, lashings and hot wax-onna-tongue, it's truly a dog's life for Marty. Caged and naked, he's eventually allowed out on a short leash for paper training with Mistress Skye. (It would've been nice if his "method" acting included a real piss on the floor, but we digress.)
Sky looks so fetching that Marty the dog-boy can't resist humping her leg but such disobedience calls for severe punishment. She neuters his self-esteem even further by tightly clamping his nipples, nuts and cock - and damned if it doesn't bring back memories of Ol' Yeller.