Zoo conservation programmes through EAZA (European Association of Zoos and Aquaria) and AZA Species Survival Plans (SSPs) coordinate captive breeding for endangered species. Welfare standards and conservation outcomes both matter.
Zoo conservation programmes require holding animals in captivity, which creates ongoing welfare obligations. The conservation benefit of captive breeding - preventing extinction and potentially supporting reintroduction - must be set against the welfare cost to individual animals. For many species, modern accredited zoo facilities can provide welfare standards compatible with dignified life; for others (wide-ranging, cognitively complex species like elephants and great apes), captivity imposes welfare costs that are more difficult to justify. Welfare-conscious evaluation of zoo conservation programmes asks both whether they are achieving conservation goals and whether the welfare of individual animals in captive programmes is actively managed and continuously improved.