Surgeon
Treatment specialist
S-tier signal. PGG ranks Surgeon in S tier; Fandom confirms class list.
Animal Hospital Anomaly Classes
Known Animal Hospital Anomaly classes from launch research. Use the tier list for rankings; use this page for facts and verification gaps.
Class list
Known classes
Head Nurse
Reliable support
S-tier signal. PGG ranks Head Nurse in S tier; exact perk values still need direct verification.
Secret Agent
Advanced utility
A-tier signal. PGG ranks Secret Agent in A tier.
Nurse
Starter support
B-tier signal. PGG ranks Nurse in B tier.
Security
Threat watch
B-tier signal. PGG ranks Security in B tier.
Doctor
Generalist
C-tier signal. PGG ranks Doctor in C tier.
Psychologist
Sanity support
C-tier signal. PGG ranks Psychologist in C tier.
Secretary
Utility
C-tier signal. PGG ranks Secretary in C tier.
Paramedic
Early support
D-tier signal. PGG ranks Paramedic in D tier.
Intern
Starter baseline
D-tier signal. Fandom lists Intern and PGG places it in D tier.
Classes are listed as facts, not purchase advice.
This wiki page records the class names, broad roles, and current confidence notes found during launch research. It is deliberately more conservative than the tier list. If a class appears here, the class identity is useful for search and planning, but the site still avoids exact prices, perk numbers, cooldowns, or hidden formulas until those details can be checked directly in game or from an official source.
Match the class to the shift problem.
Treatment-focused players should compare Surgeon, Head Nurse, Nurse, and Doctor first because those roles connect most naturally to patient care and emergency recovery. Players who lose runs to hallway danger, anomaly pressure, or sudden threat events should compare Secret Agent and Security. Newer players can still learn with Intern, Paramedic, Psychologist, or Secretary, but those roles need more source-backed testing before the site treats them as top recommendations.
What still needs direct checking.
The main open gaps are class unlock costs, exact Animal Coins requirements, perk strength, and whether any class changes arrived after the June 2026 research pass. When new patches or reliable gameplay checks confirm those values, this page should be updated before the tier list changes. Until then, use the class wiki as a structured glossary and use the tier list as the decision page.