With yet more different creatures in this volume, it drives home the fact that the monster races, though they are referred to as familiar sorts of monsters from classical myth or European folklore, are actually mostly just humanoid animals. For example: orc (humanoid boar), centaur (horse with hands and toes in place of hooves, though mostly quadrupedal), lamia (snake with arms and hands), harpy (smart bird). It is a bit quirky and I wonder if it is important for some of the central mysteries of the setting.