Tiny but mighty, Chihuahuas often sharply guard territory, resources, and owners despite small stature.
Chihuahua
Bred for protection work, Dobies tend to demonstrate dog aggression requiring extensive proper training.
Dobermann Pinscher
Originally carriage guardians, strong-willed Rotties need dedicated leadership to curb protective biting as livestock handlers.
Rottweiler
Herding background translates into high arousal and bite incidents without an experienced handler properly channeling energy.
German Shepherd
Stubborn heelers frequently nip to maneuver uncooperative charges requiring redirection.
Australian Cattle Dog
While dog/animal aggression stems from fighting ancestry, human aggression results from abusive or negligent environments.
Pit Bull
High prey drives lead many Huskies to injure smaller animals if not carefully supervised.
Siberian Husky