What Is a Rat Terrier and Pit Bull Mix?

Both the rat terrier and the American pit bull terrier are muscular dogs, although the rat terrier is much smaller. The rat terrier and the American pit bull terrier are known for their intelligence, obedience and affection. As terriers, these dogs are protective and fierce when they sense that their families are threatened, making them natural guard dogs. The rat terrier is described as easy to train, while the American pit bull terrier does best with a firm, assertive owner.