Understanding zoo animal welfare requires a comprehensive framework that goes beyond absence of suffering to encompass positive experiences, natural behaviour, and individual flourishing.
The framework for evaluating zoo animal welfare has matured substantially. Early debates focused on whether zoos were inherently harmful; current welfare science asks how to measure and improve welfare within zoo settings. The Five Domains model - nutrition, environment, health, behaviour, and mental state - provides a comprehensive assessment structure. Positive welfare indicators (play, exploration, social bonding, comfortable resting) are as important as the absence of negative states. Different species have radically different welfare needs, requiring species-specific assessment rather than universal standards. The best zoo welfare programmes treat individual animals as subjects of their own welfare stories, not just representatives of conservation programmes.