Another crossbreed mixed with a crossbreed. The Jack-A-Poo is a mixture of the mini poodle and the Jack Russell Terrier and the result is one of the most captivating animals to ever exist. The Jack-A-Poo is a highly energetic, tiny breed that loves to play and get feisty with its owner. They are smart dogs but they also require a lot of attention or else you’re going to start finding all sorts of things chewed up around the house. But how could you stay mad at this face?