Modern zoos justify their existence through conservation, education, and research, but welfare implications of captivity require ongoing scrutiny.
Zoos operate in tension between animal welfare and conservation imperatives. The strongest justification for captivity is preventing extinction, but this applies to a small fraction of zoo animals. Accreditation standards have improved welfare significantly, but the fundamental constraint of captivity means many animals cannot live full, natural lives. Honest acknowledgment of these trade-offs is necessary.