13. American Bulldog
The American Bulldog is a muscular and powerful breed known for its strength, agility, and protective instincts. Originally bred for bull-baiting and later as working farm dogs, they are characterized by their sturdy build and tenacious demeanor.
While they are often affectionate and loyal companions with their families, they can exhibit territorial behavior and aggression towards other dogs and strangers if not properly trained and socialized.
Responsible ownership and early obedience training are essential to channel their energy and prevent potential aggression.