Animal Hospital Wiki & Guides

What is Animal Hospital (Anomaly)?

Animal Hospital (Anomaly) is a multiplayer survival-horror game on Roblox, released on May 10, 2026 by the Animal Anomaly group (developer Roytt). You work night shifts at a veterinary hospital: animals queue at the check-in window, you decide which ones are real patients, you diagnose and treat the real ones, and you survive whatever else is in the building with you. It went from 57K concurrent players in its first month to the #1 most-played game on Roblox by early July.

The catch is that some of the animals in the queue are not animals. Anomalies are entities disguised as patients, and letting one through the window usually triggers a Death Ritual, spawns a monster, or turns it into a Mimic that attacks patients and staff. There are eighteen, and no single check catches all of them.

There is also no health bar. Sanity is the stat that kills you— at zero you die, and a teammate can only revive you with a $1,000 Teddy Bear; you can't use one on yourself. The other hard limit is patient deaths: three fail the run.

And there is no ending. Shifts 1–4 hand you the mechanics one at a time, story beats run through Shift 6, Liz's questline spans roughly Shifts 11–21, and past that it is endless survival at rising difficulty. See does Animal Hospital have an ending for the full structure and the "secret ending" rumor, checked.

How a shift works in Animal Hospital

1. 1
   Check-in

   A patient arrives at the window. Look at them, take a polaroid, and check the CCTV — three different ways an anomaly can give itself away.

2. 2
   Reject or admit

   Anomaly? Close the shutter (safest), or use the taser/gun. Real patient? Hand them a card and send them to a room.

3. 3
   Diagnose & treat

   Run the DNA analyzer, read the required 1–3 treatments off the bed screen, and grab the right meds. A wrong treatment kills the patient — you only get 3 patient deaths per run.

4. 4
   Watch recovery

   Patients take ~35 seconds to recover. Some anomalies only reveal themselves here — a patient that mutters "I'm hungry..." is about to turn.

5. 5
   Survive the events

   Ambulance rushes, room fires, Death Rituals, Bed Monsters — every few shifts something new tries to ruin your night. Manage your sanity or it's game over.

New to the game? Start with the Beginner's Guide — it includes the two guaranteed-safe first patients of Shift 1 and a full sanity cheat-sheet.

The three ways to catch an anomaly

Each of the 19 anomalies only gives itself away through one of three channels, and the split is uneven: 8 are visible in person, 3 only on the printed photo, and 8— the largest group — only on the security cameras. That last number is the whole argument for checking CCTV on every patient: "they looked fine at the window" clears less than half the list. A single patient can also stack several anomaly traits at once.

Every tell, channel by channel, is on the wiki's anomalies page, along with an identifier tool that names the anomaly from what you noticed. The sanity arithmetic for wrong calls is broken down below.

The nine monsters — and the four you hand an item instead of shooting

Anomalies queue at the window; monsters are already inside. Nine of them roam the hospital, and the single most useful thing to know before your first encounter is that most of them are not meant to be killed. Four are resolved by handing over an item, two have no combat answer at all, and only three are actually weapon problems. Reaching for the taser by reflex is how new players lose sanity they never needed to lose.

Two of these scale with how many people are on the shift: bare-handed damage on a Mimic is slow solo but much quicker in a group, and Hiders spawn in groups of up to six. Spawn points, exact sanity damage and full profiles are on the monsters page.

Sanity is the real health bar

Everything above converts into the same currency: you start at 61% and the shift spends it on your behalf. Know which mistakes are expensive and which refills are cheap before you need them.

• The two worst single hits are both −20, and both are avoidable: shooing the Head Banger away without giving it coffee, and zooming in on a Camera Monster on a broken feed.
• Misidentification costs −15 — that is the price of tasing or shooting a normal animal, against +2 for tasing a confirmed anomaly. It is the single biggest reason to check all three channels before you commit.
• The drains that keep running are the dangerous ones: a Ghost costs −2 per second while it is near you, a Bed Monster −10 on the grab and then −5 every 2 seconds, and a Mass of Eyes −2 to −5 per half-second for as long as you look up.
• The chocolate bar is the best refill in the shop— $120 for +60 sanity, taken +20 per bite. Coffee is the free option at +15 a cup (+5 per sip), but the machine only brews one cup every 180 seconds and a cup can't be handed to a teammate once you've picked it up.
• Some losses are optional: cursed photos only cost −10 if you physically pick them up, so let the print develop and look at it first. Ritual candles can be snuffed with eyedrops, IV or coffee at no cost.

The full table of every documented gain and loss is in the beginner's guide. Several classes change this arithmetic outright: the Psychologist starts at 100% and doubles every sanity effect in both directions, while the Secretary and Doctor pay you 1 sanity for each patient you check in or cure. Comparison on the classes page.