Companion Animals

Dog Aggression Toward Other Dogs: Assessment and Safe Management

Inter-dog aggression is one of the most common reasons dogs are relinquished. Understanding assessment, safety management, and behaviour modification enables better outcomes.

Key Facts

Up to 30% of dogs show some degree of reactivity or aggression toward other dogs
Resource guarding, fear-based reactivity, and frustration-induced aggression are distinct types
Same-sex aggression is more common in intact animals and often reduces after neutering
Dogs that have caused serious injury to other dogs require professional risk assessment
Muzzle training provides safety without causing stress to well-introduced dogs
Many inter-dog reactive dogs can be managed safely with appropriate exercise and enrichment

Welfare Considerations

Inter-dog aggression welfare involves both the welfare of the reactive dog and potential victim dogs. Reactive dogs often experience chronic anxiety and frustration that drives aggressive responses. Punishment for aggression worsens the underlying anxiety and increases attack likelihood. Safety management - lead walking, muzzle use, and avoidance of triggers - protects victim dogs while behaviour modification addresses the reactive dog's welfare through anxiety reduction.

What You Can Do

Seek professional assessment from a certified clinical animal behaviourist for inter-dog aggression
Introduce muzzle training before it is needed as a safety tool, using positive methods
Never use punishment for inter-dog aggression - seek professional help instead