Planet Zoo 2 Quarantine: How It Works and Why Animals Get Stuck

What quarantine does in Planet Zoo 2

Quarantine is a Staff Facility that keeps disease out of your habitats. Frontier's guides give it three jobs:

• New arrivals: Quarantine checks over animals that are new to the zoo before they go to a Habitat, so a disease they bring with them does not reach your other animals.
• Outbreaks: During an outbreak it holds sick animals apart from the healthy ones while they wait for a Vet.
• Emergencies: Animals in quarantine are fed, which can tide them over when their Habitat cannot feed them.

When quarantine finds a disease, the animal goes to a Vet Surgery for treatment automatically. That is why the Animals guide pairs the two: you need a Vet and a Vet Surgery to treat illness and injury, and a Quarantine to stop new arrivals bringing disease in. Put new animals through quarantine first, and your Vets treat one case instead of an outbreak. Where new animals come from, and how to adopt one in Animal Trading, is in our Planet Zoo 2 guide to getting animals.

Why animals will not go to quarantine

Moving an animal into quarantine is an ordinary animal move, so it fails for the same reasons as any other. A Caretaker boxes the animal and carries it along your paths; Vets also transport animals when no other staff are free. Frontier's Staff guide adds that every Staff Facility, the Quarantine included, must have power and be reachable by path to work. So check, in this order:

1. The Quarantine sits inside the radius of a working generator, solar panel or wind turbine.
2. A path joins it to the same network as your Trade Centre and habitats, not to a loose stretch of path.
3. A Caretaker is free, and no Work Zone keeps every Caretaker away from the Quarantine.
4. Your staff have a Staff Room: staff who run out of energy stop completing jobs.

If the game says “No path to destination”, the break is somewhere along that route; our Planet Zoo 2 No path to destination checklist walks through the Trade Centre, Staff Gate and paths one by one.

Animals stuck in quarantine

Until Update 1.0.8, an animal could finish quarantine without the game telling you: Frontier's issue tracker lists No notification when animals 'completed' quarantine, reported on all platforms since Update 1.0.4. Update 1.0.8 on 29 October 2026 added a notification when an animal passes quarantine. If none came, select the animal and check where it is before you assume it is stuck. To take it out, move it to its habitat like any other animal: the habitat needs a full barrier with a Staff Gate on the same path network.

If the animal was found to be ill, it goes to the Vet Surgery instead. Each surgery treats animals one at a time and needs power and a path, so during an outbreak more Vets and a second surgery clear the queue faster.

Quarantine and aquarium disease

Dirty aquariums make animals sick. Frontier's Aquariums guide says low Tank and Water Cleanliness become disease risks, and that diseased aquarium animals need quarantine and a Vet. Keep the water clean with a Planet Zoo 2 water filtration network whose Filtration Rate beats the tank's demand, and send Keepers in to clean the glass; the rest of an aquarium's upkeep is in our Planet Zoo 2 aquarium guide. Update 1.0.8 fixed disease spreading faster than it should in aquariums, and the issue tracker also lists Aquarium animals constantly getting diseases (reported since Update 1.0.4, updated October 27, 2026), so check the water first, then report it if your tank is clean. Everything else Frontier is fixing is on our Planet Zoo 2 bugs and known issues page.