The medium-sized Pit Bull Terrier is an American breed. Their aggressive reputation stems from their dog-fighting breeding. Modern Pit Bulls are bred for friendship and can be affectionate and devoted pets with proper training and socialization.
Pit Bull Terrier
German Rottweilers are huge and powerful. Due to their strength, loyalty, and protection, they became popular police and guard dogs after being developed to herd animals and pull carts.
Rottweiler
German Shepherds are smart, loyal, and versatile. German Shepherds, originally bred to herd and guard sheep, are now police, military, and family pets.
German Shepherd
Germans created the Doberman Pinscher in the late 19th century. Dogs were bred to guard and companion their owners. Dobermans are loyal, smart, and protective.
Doberman Pinscher
Bullmastiffs are huge dogs bred in England in the 19th century. It was bred from the English Mastiff and the Bulldog to be tough, docile, and loyal.
Bullmastiff
The Canary Islands' Presa Canario is a huge, powerful dog. Though originally intended to herd cattle and guard, they have also been employed for dogfighting.
Presa Canario
Siberian Husky is a medium-sized working dog from northeastern Siberia. The Chukchi developed them to pull sleds and deliver things over vast distances in difficult winter circumstances.