Nana the dog and Kaiser the cat are back with another awesome trick contest (previously). This time around instead of Dog vs. Cat, it’s Dog vs. Rat and Cat vs. Rat. The animals have all been trained using positive reinforcement to do similar styles of tricks. While a dog competing with a rat may seem incomparable, you’ll be surprised when you see just what those rodents can do. What the tiny rats lack in size they make up for in skill level. Watch the animals compete at different tasks and decide who you think the true champions are!