15. English Bulldog

The American Bulldog has a stellar reputation and was originally bred for guarding, laborious farm work, and fighting. If raised in a decent and comfortable home, they can be kind, sociable, and very dedicated. However, if they are not trained or nurtured with care, they might develop temperamental traits. Training and attention are typically the keys to a happy home life for this breed. The American Bulldog is a strong and muscular canine. So much so that because of their enormous size, they could unintentionally hurt kids or other small animals. The dog must be taught to understand its own size.