: A standard Bestiary typically contains between 300 and 400+ monsters .

: Monsters are primarily listed alphabetically, with additional appendices that categorize them by Challenge Rating (CR) , habitat, or monster type to assist GMs in encounter building.

The Bestiary has seen significant structural changes across different versions of the game.

The is a cornerstone of the Pathfinder system, serving as the primary encyclopedia of antagonists for Game Masters (GMs). While originally tied to the first edition (1E) launched in 2009, it has evolved through multiple volumes and editions, most recently transitioning to the Monster Core as part of the Second Edition Remaster. Core Functionality & Contents