A protective and dominant breed, American bulldogs can be quite dangerous to both humans and other dogs and animals in certain situations. At the same time, they are very loving towards their owners and can be taught to be the same towards visitors when trained properly.
To encourage obedience, the dogs should be disciplined early on to instill the mindset of the owner as their leader. According to charitable group American Bulldog Rescue, introducing them to a variety of guests at a young age decreases their tendency for shyness and aggression as they get older. Regular exercise also results in increased calmness around the house. American bulldogs should always be supervised in the presence of young children, as they are easily set off by the sudden movements of an excited child.