22. Bull Terrier

You may recognize this breed as the Target dog, but Bull Terriers have a long and storied history. They are strong and can strike hard when necessary. Keep a close eye on them around kids and other animals, as they possess a high prey drive. Bull Terriers were bred for fighting, but with proper training, they can be affectionate pets. Owners must be cautious around strangers, even if their dogs behave well at home.