Wildlife Reserves are large natural areas where you release groups of animals from your zoos. 58 of the 136 species in Frontier's Zoopedia can be released, across 6 reserves: Tanzania Reserve, Great Rift Valley Reserve, Sumatra Reserve, Sweden Reserve, Poland Reserve and Scottish Highlands. You build a release group from animals in storage, finalise it (they cannot come back) and release it into an Established ecosystem, which earns Conservation Credits.
Which animals each Wildlife Reserve takes
From the "Valid Reserves" list on each species page of the Zoopedia, checked 19 October 2026. Many species fit more than one reserve.
Tanzania Reserve28 species
Aardvark
African Leopard
African Savannah Elephant
African Tigerfish
African Wild Dog
Black Rhinoceros
Black Wildebeest
Blue Wildebeest
Blunthead Cichlid
Cape Buffalo
Common Hippopotamus
Common Ostrich
Common Warthog
Gemsbok
Greater Flamingo
Lion
Masai Giraffe
Nile Monitor
Nyala
Plains Zebra
Reticulated Giraffe
Sable Antelope
Secretarybird
Shoebill
Spotted Hyena
Springbok
Thomson's Gazelle
White-Backed Vulture
Great Rift Valley Reserve27 species
Aardvark
African Leopard
African Savannah Elephant
African Tigerfish
African Wild Dog
Black Rhinoceros
Black Wildebeest
Blue Wildebeest
Blunthead Cichlid
Cape Buffalo
Common Hippopotamus
Common Warthog
Gemsbok
Greater Flamingo
Lion
Masai Giraffe
Meerkat
Nile Monitor
Nyala
Plains Zebra
Reticulated Giraffe
Sable Antelope
Secretarybird
Shoebill
Spotted Hyena
Springbok
White-Backed Vulture
Sumatra Reserve15 species
Asian Elephant
Asian Small-Clawed Otter
Binturong
Clown Loach
Giant Gourami
Great Hornbill
Long-Tailed Parakeet
Malayan Tapir
North Sulawesi Babirusa
Saltwater Crocodile
Siamang
Sumatran Orangutan
Sumatran Tiger
Sun Bear
Sunda Pangolin
Sweden Reserve12 species
Brown Trout
Common Rudd
Eurasian Beaver
Eurasian Brown Bear
Eurasian Lynx
Golden Eagle
Grey Wolf
Long-Eared Owl
Mountain Hare
Red Deer
White-Tailed Sea-Eagle
Wild Boar
Poland Reserve11 species
Brown Trout
Common Rudd
Eurasian Beaver
Eurasian Bittern
European Bison
Golden Eagle
Grey Wolf
Long-Eared Owl
Red Deer
White-Tailed Sea-Eagle
Wild Boar
Scottish Highlands11 species
Brown Trout
Common Rudd
Eurasian Beaver
Eurasian Lynx
Golden Eagle
Grey Wolf
Long-Eared Owl
Mountain Hare
Red Deer
White-Tailed Sea-Eagle
Wild Boar
All 58 releasable species
Each species' reserves, the release group types it allows and the ecosystem roles it fills, as its Zoopedia page lists them. Species names link to Frontier's page.
Show the table: reserves, release groups and roles for all 58 species
Releasable Planet Zoo 2 species, checked 19 October 2026
Scottish Highlands, Sweden Reserve, Poland Reserve
Mixed Group, Female Bachelor Herd, Solitary Male
Grazers, Medium Prey, Soil Rooters, Terrestrial Spore Dispersers
Predators, scavengers and the roles they need
Frontier's guide says an ecosystem can become Flourishing only once it is Established and animals fill the Ecosystem Roles it needs, and that some release groups need a Flourishing ecosystem. 10 releasable species list "Required Roles" on their Zoopedia page. Beside each, the releasable species that fill that role in at least one of the same reserves:
African Leopard needs Medium Prey. Medium Prey: Black Wildebeest, Blue Wildebeest, Common Ostrich, Common Warthog, Gemsbok, Nyala, Plains Zebra, Sable Antelope, Springbok and Thomson's Gazelle.
African Wild Dog needs Medium Prey. Medium Prey: Black Wildebeest, Blue Wildebeest, Common Ostrich, Common Warthog, Gemsbok, Nyala, Plains Zebra, Sable Antelope, Springbok and Thomson's Gazelle.
Eurasian Lynx needs Medium Prey. Medium Prey: Red Deer and Wild Boar.
Grey Wolf needs Medium Prey and Small Prey. Medium Prey: Red Deer and Wild Boar. Small Prey: Eurasian Beaver and Mountain Hare.
Lion needs Medium Prey. Medium Prey: Black Wildebeest, Blue Wildebeest, Common Ostrich, Common Warthog, Gemsbok, Nyala, Plains Zebra, Sable Antelope, Springbok and Thomson's Gazelle.
Nile Monitor needs Predators. Predators: African Leopard, African Wild Dog, Lion, Secretarybird, Shoebill and Spotted Hyena.
Saltwater Crocodile needs Medium Prey. Medium Prey: Malayan Tapir and North Sulawesi Babirusa.
Spotted Hyena needs Medium Prey. Medium Prey: Black Wildebeest, Blue Wildebeest, Common Ostrich, Common Warthog, Gemsbok, Nyala, Plains Zebra, Sable Antelope, Springbok and Thomson's Gazelle.
Sumatran Tiger needs Medium Prey. Medium Prey: Malayan Tapir and North Sulawesi Babirusa.
White-Backed Vulture needs Predators. Predators: African Leopard, African Wild Dog, Lion, Nile Monitor, Secretarybird, Shoebill and Spotted Hyena.
Frontier does not say in what order to release them; the lists only show which animals fill each role.
How to release animals into a Wildlife Reserve
Open the Release Groups tab in the reserve (you need a Research Outpost there first), or open Animal Trading & Storage in a zoo and go to Release Groups.
Select Create Release Group and choose a species. Some species have to be researched before they appear.
Choose the group type, the number and mix of animals, and select Create.
Edit the group members: add animals from Animal Storage until the group meets its requirements.
Select Finalise Release Group. This cannot be undone.
Choose Release to Wildlife Reserve, or Quick Release for Conservation Credits straight away.
From a zoo, the Planet Hub opens with the reserves that suit the group; travel to one, pick an Established ecosystem that meets the species' needs and release.
The group types the Zoopedia uses are female bachelor herd, solitary male, male bachelor herd, mixed group, breeding partners and solitary female. Frontier says released animals need much less management than zoo animals, and that you have less control over them.
Biodiversity Rating
Every reserve has a Biodiversity Rating with two parts:
Ecosystem Rating goes up as you create Established and Flourishing ecosystems, remove pollution and invasive plants with the Demolish Brush, and release more suitable species (Species Diversity).
Research Rating goes up with a network of Observation Platforms, Camera Traps and Acoustic Monitors across the reserve.
An ecosystem is painted with the Ecosystem Brush and becomes Established once its area, terrain and plant requirements are met; some also need the right amount of water or high or low ground. Research networks also open Research Gates and higher levels of species research, and some species have to be released and studied in a reserve before their research is complete.
Wildlife Reserves in Franchise mode
In Franchise mode, a reserve's Biodiversity Rating raises your accreditation tier along with your zoos' reputation, and release Conservation Credits go into the pool every zoo in the franchise shares. Update 1.0.5 fixed reserves costing the wrong amount of Conservation Credits there. More in our Franchise mode guide.
Before you release a species, check what it needs in a zoo first: the animal requirements calculator gives each species' minimum habitat.
Common questions
How many Wildlife Reserves are in Planet Zoo 2?
The Zoopedia's species pages name 6 reserves that animals can be released into: Tanzania Reserve, Great Rift Valley Reserve, Sumatra Reserve, Sweden Reserve, Poland Reserve and Scottish Highlands.
Can every animal be released into a Wildlife Reserve?
No. 58 of the 136 species list at least one valid reserve on their Zoopedia page, and the other 78 list none. The releasable species include 6 aquarium fish, such as the African Tigerfish.
Can released animals come back to the zoo?
No. Once you finalise a release group, the animals go to acclimatisation and cannot return to your zoo. Frontier's guide says finalising cannot be undone.
What is the difference between releasing and Quick Release?
Both follow a finalised release group. Release to Wildlife Reserve takes you to a reserve, where you pick an Established ecosystem for the species and get Conservation Credits for a successful release. Quick Release gives Conservation Credits straight away.
Why can I not create a release group for a species?
You may need to research the species in a zoo first to unlock its release group options. To create a release group inside a reserve, you also need a Research Outpost there. The animals must already be in Animal Storage and meet the group's requirements.
Each source was opened and checked on 19 October 2026. Frontier's own pages are the authority; if they change, they take precedence over this page.
Frontier, Planet Zoo 2 Zoopedia: the "Valid Reserves", "Valid Release Group Types" and "Required Roles" lists and the roles each species fills, for all 136 species