Pit Bulls were bred for fighting and make up the majority of fatal attacks on humans.
Rottweilers are powerful dogs with strong bite force. Attacks often involve poor breeding, training, or irresponsible ownership.
German Shepherds can become aggressive without proper training. Their size and power demand experienced handling.
Dobermans historically had a reputation for being aggressive. With proper breeding and training, they can be gentle pets.
As a mix between a bulldog and mastiff, the Bullmastiff has great strength. They can be aggressive if not socialized early.
Siberian Huskies have a strong prey drive and tendency to attack smaller animals. They require training and containment.
Alaskan Malamutes were bred to hunt large polar bears. Like Huskies, they have high prey drives requiring control.