What are the different types of anomalies?

Animal Hospital Anomaly features four main anomaly types. Entities are ghostly or supernatural beings (like The Watcher, Echo Child, Phantom Nurse, and The Warden) that often have unique behaviors and rules of engagement. Creatures are physical monsters (like the Distorted Patient, Nightmare Hound, and Infestation swarms) that can be fought with items but are best avoided. Environmental hazards (like Blood Stain, Contamination, and Glitch Wall) are part of the hospital itself and require awareness rather than direct confrontation. Bosses (The Doctor and The Morgue Keeper) are unique, extremely powerful anomalies with complex AI patterns. Each type requires a different survival approach.