Which is the best class in Animal Hospital?
For free players: Surgeon (S-tier, best medical class with superior treatment speed) and Psychologist (A-tier, essential for long shifts with passive sanity resistance). For Robux spenders: Secret Agent (starts with a gun, eliminating the need to buy one) and Head Nurse (team-wide buffs that benefit everyone in multiplayer).
How do I earn currency to unlock classes?
You earn Cash by completing shifts and treating patients correctly. Higher shifts reward more Cash. Animal Coins are a separate premium currency earned through gameplay milestones and achievements. Robux classes (Head Nurse, Secret Agent) require real-money purchase — they are quality-of-life upgrades, not pay-to-win necessities.
What class should a beginner unlock first?
Start as Intern (free). Save Cash from your first 2-3 shifts, then unlock Nurse as your first upgrade — it provides better treatment speed and higher sanity. From Nurse, the optimal path is: Doctor → Surgeon. Psychologist is a strong alternative unlock around Shift 5+ when sanity management becomes critical.
Are the Robux classes worth buying?
Secret Agent is the better Robux purchase — starting with a Gun saves you significant Cash that would otherwise go toward the weapon, and the class bonuses are strong. Head Nurse is valuable in multiplayer but less impactful solo. Neither is required to complete all shifts; they are convenience purchases.
Can I switch classes mid-shift or between shifts?
You select your class before starting a shift. Once a shift begins, you cannot change classes. Between shifts, you can freely switch to any class you have unlocked. Plan your class choice based on the shift difficulty, whether you are playing solo or multiplayer, and what items you have available.
What is the worst class and should I avoid it?
No class is truly "bad," but Intern becomes obsolete quickly — upgrade to Nurse as soon as you can afford it. Security is considered the weakest mid-tier class because its bonuses are situational and rarely outweigh the medical efficiency of Doctor or the sanity resistance of Psychologist. Skip Security unless you are curious to try it.