Deafness in dogs, whether congenital or acquired, requires adapted management to ensure safety and welfare quality of life.
Deaf dogs face unique welfare challenges primarily related to startling and consequent defensive aggression when approached without warning. Owners who are unaware their dog is deaf may misinterpret fear-based reactions as aggression and respond with punishment, creating a cycle that substantially compromises welfare. With informed management - vibration signals, hand signals, visual cues, and awareness of approach direction - deaf dogs can function normally and have excellent welfare. Welfare concerns about deliberate euthanasia of deaf puppies by some breeders is an important ethical issue, as deafness alone does not prevent a good quality of life with appropriate management.