Companion Animals

Dog Interdog Aggression and Multi-Dog Welfare

Interdog aggression in multi-dog households causes chronic stress for all dogs involved, requiring careful assessment and management to protect welfare.

Key Facts

Interdog aggression is the most common reason dogs are surrendered to shelters
Resource guarding, fear, and redirected arousal are common aggression triggers
Conflict between resident dogs after a new dog is introduced affects all household dogs
Separation management allows cohabitation when integration is not possible
Professional behaviourist assessment is essential before attempting to manage serious aggression

Welfare Considerations

Chronic conflict between household dogs causes significant ongoing stress for all dogs involved, not just combatants. Even 'resolved' conflicts leave residual anxiety. The welfare cost of inappropriate multi-dog management is experienced daily. Professional assessment and sometimes permanent separation are more welfare-compassionate than forcing incompatible dogs to cohabit.

What You Can Do

Consult a qualified clinical animal behaviourist for persistent interdog aggression
Never force dogs together if conflict is consistent - permanent separation may be more humane
Provide separate feeding stations, water bowls, and sleeping areas in multi-dog households