Zoos justify their existence partly through educational and conservation roles, but evidence for the effectiveness of these functions varies and their relationship to animal welfare is complex.
The educational and conservation justification for zoos is increasingly scrutinised alongside welfare arguments. A meaningful zoo welfare ethic requires honest assessment of whether individual animals' welfare costs are proportionate to demonstrated conservation and educational benefits. Zoos that can demonstrate genuine welfare provision alongside credible conservation outcomes represent the most defensible model; those using conservation rhetoric while maintaining poor welfare standards face legitimate challenge.