"Pathfinder Roleplaying Game: Bestiary 2
Animal Companions: allosaurus, arsinoitherium, baboon, compsognathus, gar, glyptodon, hippopotamus, manta ray, megaloceros, megatherium, parasaurolophus, ram, giant snapping turtle, stingray, tylosaurus; Familiars: brownie, compsognathus, lyraken azata, snapping turtle, voidworm protean; Feats: none of the feats are legal for play for PCs, animal companions, or familiars unless specifically granted by another legal source; Other: all creatures in this book are legal for polymorph effects (including a druid's wild shape ability) within the boundaries of each spell or ability's parameters."
From the additional resources page, if I read that correctly, it brings up my original question.