Reference

Planet Zoo 2 Glossary

Plain-English explanations of the words and terms used in Planet Zoo 2, from accreditation and thriving to boxing, null barriers, shoals, work zones and release groups.

5 min read Updated 2026-11-07

Planet Zoo 2 throws a lot of game words at you. Here's what they all mean, in plain English, grouped by topic. Each one links to the guide where it matters most.

Animals and welfare

Term What it means
Welfare How happy and healthy an animal is, from 0 to 100%. Click an animal to see what's helping or hurting it. See Animal Welfare
Thriving The level above 100% welfare. You unlock the extra requirements through research. Thriving animals boost your zoo's stars
Enrichment Toys and food puzzles that keep animals busy: balls, tyres, mud baths, puzzle feeders, frozen treats
Food grade How good the food is. Grade 2 costs more and is a common thriving requirement
Plant coverage How much of the habitat is covered in plants. Every species has a target range, and too much is bad too
Shelter Covered space the animal can get into, like caves, huts and rock overhangs
Social group The group's size and male/female mix. Some species allow only one adult male
Appeal How interesting an animal is to guests. Big, rare and colourful animals have more
Traits An individual's stats: fertility, immunity, longevity and size
Rating (bronze / silver / gold) An overall grade for an individual animal based on its traits
Genetic diversity How unrelated two animals are. Siblings score low. Some release groups need at least 50%
Contraceptives A toggle that stops an animal breeding. Used to prevent inbreeding
Colour variant An individual with unusual colouring. Purely cosmetic
Boxed The game has put the animal back in its transport crate, usually because it can't move where it is or the water was drained. Click it and unbox it
Escape An animal has got out of its habitat. Use emergency capture and then fix the leak

Habitats and building

Term What it means
Habitat A fenced area for animals, on land or in water
Barrier The game's word for a fence or wall. Barriers have a height and a grade (strength), and some need to be climb-proof
Null barrier An invisible barrier, used where a cliff, moat or building already forms the edge
One-way glass A glass barrier guests can see through but the animal can't see out of
Habitat gate / staff gate The door keepers use to get in and where new animals are delivered
Exhibit A small enclosure (a box or tube) for reptiles, bugs, frogs and small fish. See Exhibits
Aviary A habitat with a netting roof for birds and climbing animals. See How to Build an Aviary
Aquarium A water habitat with acrylic or glass walls. See How to Build an Aquarium
Pin species Attach an animal to a habitat to preview whether it's big enough
Traversable area A heat map that shows where an animal can walk, climb or jump
Blueprint A saved build you can place again, made by you, by Frontier or downloaded from the Workshop
Stamp A shape you press into terrain or paths, such as a square, circle or octagon
Edit widgets Draggable dots on paths that let you reshape them after placing
Implied realism A building style: make it look believable to a guest and hide the rest

Water

Term What it means
Water pump Keeps a pond or pool fresh. Without one, water turns dirty
Water filter Cleans aquarium water. Each filter adds supply, and your water area creates demand
Filtration network All the filters and pools connected together. You set salinity (fresh or salt water) here
Shoal A group of small schooling fish bought and simulated together
"Hero" fish Big fish such as sharks and rays that are treated as individual animals with their own needs

Staff and guests

Term What it means
Work zone A group of habitats, buildings and staff that belong together. Staff only work where they're assigned. See Staff
Keeper / caretaker / mechanic / vendor / vet / educator The main staff jobs: animal care, cleaning, repairs, shops, health and research, and talks
Staff room perk A bonus you choose for a staff room, like learning resources (staff train while resting)
Guest needs Hunger, thirst, energy (tiredness) and toilet
Dietary requirements Some guests can't eat certain foods (meat, dairy, wheat, sugar), so mix your food stalls
Protesters Unhappy members of the public who turn up when animal welfare is poor
Zoo inspection A periodic check by an inspector on cleanliness, facilities and animal care

Franchise and conservation

Term What it means
Franchise mode The main management mode with a real economy and unlockable animals. See Franchise Mode Guide
Accreditation Franchise tiers 1–5 that unlock new animals. See Accreditation
Reputation stars Your zoo's star rating, made up of animal care, education, sustainability, guest experience and variety
Wildlife reserve A wild area separate from your zoo where you release animals you've bred. See Wildlife Reserves
Biodiversity rating A reserve's star rating
Ecosystem A nature area inside a reserve, such as grassland, savanna or loch
Species role The job an animal does in an ecosystem: grazer, scavenger, soil rooter, prey and so on
Release group A group of zoo-bred animals the game accepts for release, like a mating pair or a bachelor herd
Quick release Releasing a single animal straight away for a few credits
Quick trade Selling an animal back straight away for a little cash
Conservation credits The second currency, earned by releasing animals and doing conservation projects. See Conservation Credits
Conservation project A task on the world map that costs cash and lends out staff for a while, in return for credits
Community challenge A fortnightly shared goal for all Franchise players, with cosmetic rewards
Trade centre / storage Where animals arrive and leave, and the holding list for animals that aren't in a habitat
Zoopedia The in-game (and online) animal encyclopedia
Research Vets studying animals, diseases and enrichment to unlock new knowledge and items. See Research