Decisions about euthanasia in terminally ill cats involve complex welfare and ethical considerations that are best supported through collaborative owner-veterinarian quality-of-life assessment and compassionate communication.
Feline end-of-life decision-making involves a genuine welfare ethical burden — the question of when to euthanise a declining cat is genuinely difficult, and there is no objectively correct moment. The welfare imperative is to prevent significant suffering rather than extend biological life as long as possible. Cats that hide pain effectively may appear to be coping until welfare is severely compromised — systematic quality-of-life assessment provides a more reliable measure than casual observation alone. Owners who can identify and name the "good days" their cat still has provide a useful benchmark for assessing when the good days have given way to predominantly bad ones. Veterinarians who engage in compassionate, honest quality-of-life conversations support owners in making welfare-positive decisions without imposing guilt.