Chester Zoo holds a large and diverse collection.
At the end of 2007, over half the species at the zoo appeared on the IUCN Red List and 155 were classified as threatened species.
134 species were kept as part of a managed captive breeding programme.
The zoo manages the studbooks for Congo buffalo, jaguar, blue-eyed cockatoo, Madagascan tree boa, gemsbok (all ESB species), black rhinoceros, Ecuadorian amazon parrot, Mindanao writhe-billed hornbill, Sumatran tiger and Rodrigues flying fox (all EEP species).
In addition, Chester holds 265 threatened plant species.

At the end of 2015, Chester zoo became the first zoo outside of New Zealand to breed the tuatara.
Chester Zoo holds a large and diverse collection. At the end of 2007, over half the species at the zoo appeared on the IUCN Red List and 155 were classified as threatened species. 134 species were kept as part of a managed captive breeding programme. The zoo manages the studbooks for Congo buffalo, jaguar, blue-eyed cockatoo, Madagascan tree boa, gemsbok (all ESB species), black rhinoceros, Ecuadorian amazon parrot, Mindanao writhe-billed hornbill, Sumatran tiger and Rodrigues flying fox (all EEP species). In addition, Chester holds 265 threatened plant species.
At the end of 2015, Chester zoo became the first zoo outside of New Zealand to breed the tuatara.
Chester Zoo