There are a total of 630 Zoo animals compiled and organized in this comprehensive list. The selection includes species commonly held in accredited zoos, those important for conservation or education, and widely exhibited taxa with verified names.

Zoo animals are captive or managed wild species kept for display, conservation, research, or education. They range from tiny amphibians and insects to the largest mammals and birds. Many serve as ambassadors for their wild relatives and help support breeding programs and scientific study. Zoos also preserve genetic diversity and engage the public in species conservation.

Interesting and little-known facts about Zoo animals:
– More than 200 accredited institutions in North America and Europe coordinate species programs and share records through databases like ZIMS.
– Successful reintroductions from zoo breeding programs include the black-footed ferret and the California condor.
– Many zoo-kept tortoises and parrots can live 20–50 years longer in managed care than typical wild lifespans.
– A giraffe’s tongue measures about 45–50 cm, an adaptation for browsing thorny Acacia branches.
– Zoos increasingly use genetics and coordinated studies to reduce inbreeding and guide conservation priorities for threatened species.

The alphabetical index directs readers to species lists organized by initial letter. Columns list common name; binomial name; origin (continent, country); typical adult size in cm (method noted); conservation status; key sources: AZA, EAZA, ZIMS, IUCN.