Fear-based aggression is the most common form of dog aggression — it is a welfare problem rooted in anxiety, not dominance, and responds well to evidence-based treatment.
A dog that bites from fear is a dog that has been failed by its environment and handlers — it has not been provided with the social learning, early positive experiences, and management that prevent fear from escalating to aggression. The welfare implication is that fear-aggressive dogs suffer continuously from the anxiety that drives their behaviour. Punishment-based responses compound this suffering while increasing the underlying fear. Evidence-based treatment using counter-conditioning, systematic desensitisation, and anxiolytic medication where indicated addresses the root welfare problem — the dog's chronic anxiety — rather than suppressing its expression.