Knowledge of the physiology of creatures in general. This is an umbrella skill that encompasses a vast suite of sub-skills for particular types of creatures. This skill represents generalized knowledge that applies to all creatures in the world.
Knowledge of the physiology of creatures made by mad science or dark chemistry.
Knowledge of the physiology of spiders, insects, and scorpions.
Knowledge of the physiology of bears. Bugbears, which are half-goblin and half-bear, are also covered by this skill, as they take after their bear side more than the goblin side.
Knowledge of the physiology of dogs, wolves, and werewolves. Gives bonuses to killing, skinning, and raising these creatures.
Knowledge of the physiology of cats of all types.
Knowledge of the physiology of constructs such as golems.
Knowledge of the physiology of crones and their ilk, including harpies, hags, and striga.
Knowledge of the physiology of demons.
Knowledge of the physiology of dinosaurs. This skill also covers birds, which are descended from dinosaurs, and dragons, which are descended from birds.
Knowledge of the physiology of elementals.
Knowledge of the physiology of elves.
Knowledge of the physiology of faeries and fey creatures, including some animals that look mundane but aren't, such as the fey panther.
Knowledge of the physiology of fish. Also snails. They're very similar. Really.
Knowledge of the physiology of fungus people, slime monsters, overgrown bacteria, and ooze beasts.
Knowledge of the physiology of giant-kin such as yetis and ogres.
Knowledge of the physiology of goblins.
Knowledge of the physiology of humans.
Knowledge of the physiology of incorporeal creatures, such as ghosts and shadow illusions.
Knowledge of the physiology of large herbivores that do NOT chew cud, such as pigs, rhinos, and horses.
Knowledge of the physiology of orcs.
Knowledge of the physiology of monstrous plants.
Knowledge of the physiology of rakshasa.
Knowledge of the physiology of snakes, snake-people, and generally snakey things.
Knowledge of the physiology of rodents.
Knowledge of the physiology of cud-chewing herbivores such as cows, sheep, deer, and camels.
Knowledge of the physiology of undead, such as skeletons, zombies, and liches. This skill doesn't cover undead without bodies, such as ghosts and wraiths.