Animal-assisted therapy benefits human patients, but the animals used also deserve careful welfare consideration and protection from overwork and stress.
Therapy animals are often selected for calm temperaments, but even naturally tolerant animals can be overwhelmed by repeated, intense human contact. Signs of stress in dogs include yawning, lip-licking, turning away and whale eye. Horses may show tension, reluctance or skin twitching. Ethical programmes give animals genuine choice about participation, allow them to disengage, and ensure ample rest. Animals should never be forced to continue sessions when showing stress signals. Regular veterinary and behavioural assessments protect long-term welfare and therapy effectiveness.