Dog aggression toward humans has complex causes and serious welfare implications for both dogs and people. Understanding these causes guides prevention and humane intervention.
Dog aggression toward humans is a welfare issue for dogs as well as a public safety issue. Dogs that bite typically have histories of fear, inadequate socialization, or chronic stress that produce the aggression. They are often then punished for communicating their distress through warning signals, which suppresses warnings and escalates to biting. Once a dog has bitten, welfare is immediately at risk: euthanasia rates for dogs with bite histories are high, even when the incident was provoked and the dog has good behavior modification potential. Prevention through early socialization, recognizing and respecting dog communication, and addressing underlying anxiety is both welfare-positive and public safety-positive. Breed-specific legislation, which targets appearance rather than individual behavior, has failed consistently and carries significant welfare costs.