25. U.S. Bandogge

The American Bandogge, also referred to as the Bandog, is a Mastiff and American Bulldog hybrid. These bloodlines give rise to the breed’s strong and graceful appearance. American bandogges require athletic and energizing leadership, compassion, and care in order to thrive, according to the American Kennel Club. They are bright and confident hounds and are not recommended as companions for first-time dog owners. But if they feel threatened, they may act in a dangerously leadership-like manner. According to Inside Dog World, this breed can clamp down on just about anything and do serious harm with a pressure rating of 730.