As zoo animals age, facilities face complex welfare decisions about retirement, euthanasia, transfer, and end-of-life care that balance individual welfare needs against institutional constraints and visitor expectations.
The welfare of geriatric zoo animals requires individualized, proactive medical management. Chronic pain from arthritis is common in large mammals including elephants, bears, and great apes, and requires ongoing pain assessment and management. Cognitive decline can cause disorientation and anxiety. Facilities must have clear end-of-life policies that prioritize the animal's welfare experience over visitor appeal or institutional preference. Management euthanasia of healthy animals for population control raises ethical concerns distinct from veterinary euthanasia for welfare reasons. Transparency about these decisions is important for public trust in zoo welfare standards.