Animal Hospital classes are the build system that makes the difference between surviving a late shift and losing your Sanity by Shift 3. Since developer Animal Anomaly released the co-op horror game on May 10, 2026, it has climbed to over 1.2 million concurrent players following a major July update. Each class nudges your Sanity, inventory space, or starting gear in a different direction, and picking the wrong one for your playstyle makes even early shifts unnecessarily difficult.
With ten classes now live and several receiving fresh perks and visual reworks in the latest update, here is every class explained, their costs, perks at every level, and which ones are worth spending your Animal Coins on first.
What Are Classes in Animal Hospital?
Classes are purchasable modifiers that change how your character plays across three stats: Sanity, Utility, and Starter Money. Sanity starts every round at a baseline of 61% before any class bonuses apply. The bad ending triggers when Sanity drops to zero, so managing it is the core survival mechanic of every shift. Utility determines how many items you can carry at once. Starter Money gives you a head start on supplies before a shift begins.
You can buy classes from the lobby by clicking the Classes button on the left side of the screen, or by walking into the large yellow circle next to the ambulance on the left of the spawn point. Purchases use Animal Coins earned from completing shifts, though Head Nurse and Secret Agent are Robux-exclusive. Every class can be upgraded through three levels with perks scaling up at each stage.
Animal Hospital currently has no code system, so there is no way to unlock classes for free outside of grinding shifts.
All 10 Animal Hospital Classes
1. Intern
- Cost: Free
- Sanity: Level 1: Start with 71% Sanity (+10). Level 2: 76% Sanity (+15). Level 3: 81% Sanity (+20)
- Utility: None
- Starter Items: None
Intern is the default class every player starts with and the only one that uses fur colour to distinguish teammates from each other in-game. It works while you are learning the hospital layout, but it is the least useful class once you have even a small stockpile of Animal Coins. Buy Secretary or Nurse as your first purchase and move on.
2. Nurse
- Cost: 20 Animal Coins
- Sanity: None
- Utility: Level 1: +1 max inventory. Level 2: +2 max inventory. Level 3: +3 max inventory
- Starter Items: None
Nurse is the cheapest upgrade available and straightforward to use for players who prefer supporting teammates over chasing anomalies. Extra inventory space matters in almost every shift since you are constantly juggling medicines and treatment items. It gets outclassed by Head Nurse at max level, but it is a solid first purchase while you save for something stronger.
3. Secretary
- Cost: 120 Animal Coins
- Sanity: Level 1: Recover Sanity when checking in patients. Level 2: Same, plus +5 bonus Sanity. Level 3: Same, plus +10 bonus Sanity
- Utility: None
- Starter Items: None
Secretary rewards players who spend time at the front desk. Checking in patients is something you do constantly anyway, so its Sanity recovery is reliable rather than situational. This is one of the better value picks for beginners since it works with the core gameplay loop rather than requiring you to change how you play.
4. Paramedic
- Cost: 250 Animal Coins
- Sanity: None
- Utility: None
- Starter Items: Level 1: Large Run Cola (6 uses). Level 2: Large Run Cola (9 uses). Level 3: Large Run Cola (9 uses), regenerates 1 use per round
Paramedic gives you a mobility item from the very start of every shift, useful for reacting quickly to fires, fainted patients, or anomalies appearing across the hospital. The Run Cola at level 3, regenerating every round, keeps the class relevant through long sessions. A solid pick for players who prefer covering ground fast over building Sanity.
5. Psychologist
- Cost: 500 Animal Coins
- Sanity: Level 1: All Sanity effects doubled. Level 2: Doubled effects, 7.5% chance to ignore Sanity loss. Level 3: Doubled effects, 15% chance to ignore Sanity loss
- Utility: None
- Starter Items: None
Psychologist doubles every Sanity swing — positive and negative — which means mistakes hurt more but safe activities like patient check-ins and camera repairs build Sanity quickly. At max level, a 15% chance to ignore Sanity loss entirely can save runs during difficult situations. This class is considered by many players to be the best beginner pick once you are familiar with the anomaly mechanics, since the doubled gains compound fast.
6. Doctor
- Cost: 900 Animal Coins
- Sanity: Level 1: Recover Sanity when healing patients, +10 bonus Sanity. Level 2: Same, +15 bonus Sanity. Level 3: Same, +20 bonus Sanity
- Utility: None
- Starter Items: None
Doctor rewards players who spend most of their shift in treatment rooms. It is effectively a more affordable stepping stone toward Surgeon, offering steady Sanity recovery from healing without the added speed boost. If you cannot afford Surgeon yet, Doctor is a meaningful upgrade over everything below it.
7. Security
- Cost: 1,250 Animal Coins
- Sanity: None
- Utility: None
- Starter Items: Level 1: X-Taser (5 uses). Level 2: X-Taser (6 uses) plus Deployable Camera. Level 3: X-Taser (6 uses, regenerates 1 use per round) plus Deployable Camera
Security is built for players who want to actively deal with threats instead of avoiding them. The X-Taser is especially valuable early on since Tasers do not appear in the Supplies Shop until Shift 3. The Deployable Camera added at Level 2 and 3 following the latest update gives the class additional utility for teams that need extra surveillance coverage across the hospital.
8. Head Nurse
- Cost: Robux only (approximately 190 Robux, check the in-game shop for your region’s exact price)
- Sanity: Level 1: None. Level 2: +10 bonus Sanity. Level 3: Same, plus Special Technique upgrade each round
- Utility: Level 1: +3 max inventory. Level 2: +3 max inventory. Level 3: +3 max inventory
- Starter Items: None
Head Nurse is an upgraded Nurse with a Robux price tag. The inventory boost matches Nurse at max level from the very first level, and the Level 3 Special Technique lets you submit every treatment item in your inventory instantly, a serious time-saver during hectic shifts or solo runs. Worth the Robux if you play regularly and want a strong support option without spending 2,500 Animal Coins on Surgeon.
9. Surgeon
- Cost: 2,500 Animal Coins
- Sanity: Level 1: Sanity recovery plus a short speed boost after healing a patient. Level 2: Same, with an 8-second speed boost. Level 3: 2x Sanity recovery, 8-second speed boost, +10 bonus Sanity
- Utility: None
- Starter Items: None
Surgeon is the strongest free-to-play class in Animal Hospital by a clear margin. Healing patients is something every player does constantly, so the Sanity-and-speed combination compounds throughout a full shift rather than requiring you to play differently. At Level 3, the doubled Sanity gain and 8-second speed window noticeably outpace Doctor in both solo and team play. Use the speed burst proactively — reposition toward the next patient, grab a supply, or cover an emergency rather than letting it expire.
10. Secret Agent
- Cost: Robux only (approximately 360 to 890 Robux depending on bundle, check the in-game shop for your region’s exact price)
- Sanity: Level 1: None. Level 2: +10 bonus Sanity. Level 3: +20 bonus Sanity
- Utility: None
- Starter Items: Level 1: Gun (20 uses). Level 2: Gun (30 uses). Level 3: Gun (30 uses), regenerates 1 use per round
Secret Agent is the most expensive class in the game and the strongest for anomaly control. Its gun eliminates threats from a distance, though it carries friendly fire risk and is effective specifically against interior threats like Skin Walkers — most map hazards ignore gunfire entirely. As of the latest update, Secret Agent also starts with a Scanner that detects whether a patient is an anomaly, adding genuine utility on top of its firepower. Handle the gun carefully around teammates.
Best Animal Hospital Classes Tier List
| Tier | Classes |
|---|---|
| S | Surgeon, Secret Agent, Head Nurse |
| A | Secretary, Doctor, Psychologist, Security |
| B | Paramedic, Nurse |
| C | Intern |
- Surgeon earns S-Tier as the best free-to-play class by a clear margin. Its perks scale directly with healing patients, the core activity of every shift, making it more powerful the longer a run goes.
- Secret Agent and Head Nurse are Robux-exclusive but offer utility that is difficult to replicate with Animal Coin classes alone. Secret Agent handles anomaly threats more reliably than any other class. Head Nurse saves significant time during treatment through its Level 3 Special Technique.
- Secretary and Psychologist are the strongest A-Tier picks for newer players. Secretary provides reliable Sanity recovery without requiring you to change your playstyle. Psychologist becomes increasingly powerful as you learn the anomaly patterns and can lean into the doubled Sanity gains safely.
- Paramedic and Nurse provide real value but get outclassed once you can afford something higher on the list.
Intern is only useful for your first two or three shifts while learning the game.
What Changed in the Latest Animal Hospital Update
The July 2026 update pushed the game past 1.2 million concurrent players and brought meaningful changes beyond balance tweaks:
- New content: A new lore character named Liz was added, tied to the Animal Corporation storyline. Her introduction expands the game’s narrative beyond the hospital setting.
- Visual reworks: Secretary, Surgeon, Paramedic, Psychologist, Doctor, Security, Head Nurse, and Secret Agent all received updated visual designs. Older designs for each class are now available separately as purchasable classic skins using Animal Coins.
- New starter items: Secret Agent received a Scanner that detects whether a patient is an anomaly. Security received a Deployable Camera at Level 2 and above. Both additions give these classes more utility beyond their original loadouts.
Further balance passes are expected as the developer continues updating the game.
Signing Off
Surgeon remains the go-to for free-to-play players, and with the latest update adding new starter items to Security and Secret Agent, the gap between Animal Coin classes and Robux classes has shifted slightly. Whether you are grinding toward Surgeon or saving Robux for Secret Agent, the class system has more depth than it appears to at first glance.
Classes are purchasable modifiers that change how your character plays during each shift. They affect Sanity, inventory capacity, and starting items. Every class has three upgrade levels that strengthen its perks.
There are currently 10 classes: Intern, Nurse, Secretary, Paramedic, Psychologist, Doctor, Security, Head Nurse, Surgeon, and Secret Agent.
Intern is free by default. Most other classes are purchased with Animal Coins earned by completing shifts. Head Nurse and Secret Agent can only be bought with Robux.
Surgeon is the best Animal Coin class by a wide margin. It provides Sanity recovery and a speed boost every time you heal a patient, which happens constantly throughout every shift. The effect compounds the longer a run goes.
Yes. Intern, Secretary, Doctor, and Surgeon all provide bonus Sanity or Sanity recovery as they level up. Psychologist doubles all Sanity changes in both directions. Secretary recovers Sanity on patient check-ins.
Yes, if you play regularly. The Level 3 Special Technique instantly submits all treatment items in your inventory, which saves significant time during hectic shifts. The +3 inventory bonus also applies from Level 1, unlike Nurse, which requires grinding to max level for the same result.
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