Animal-assisted therapy and pet therapy programmes use animals to support human wellbeing. The welfare of the animals participating in these programmes requires equal attention to the human benefits they provide.
Animal-assisted therapy benefits humans while creating welfare obligations for the animals involved that are frequently inadequately addressed. The use of animals in therapeutic settings exposes them to unfamiliar environments, unexpected touches from multiple people, strong medications odours, and emotional distress of clients that may be aversive. Stress indicators in therapy animals during and after visits are documented in research, indicating genuine welfare costs to participation. The welfare cost is manageable with good programme design including session length limits, regular breaks, welfare assessment, and respect for animal agency in choosing to engage. The welfare of therapy animals must be assessed continuously through their working life with retirement protocols ready when welfare compromise is detected.