Two police canines, a cancer detecting lab, a border collie bat dog and the ultimate underdog, an 11-year-old completely deaf Pitbull, battle it out in the combine. Super sniffers, lighting speed and terrifying takedowns make for the most competitive Dog House yet.

In this all rescue dog episode, a Bulldog/Pitbull mix that was rehomed five times, an Australian cattle dog with two titanium knees, a Pitbull that went from police K9 to farm dog, Top Dog's first ever Siberian husky and a rookie K9 cop are all ready to prove that a pound puppy can become a Top Dog.