Theriocephalus race concept

The theriocephalus (from therio- + -cephalus) is a human with the head of an animal. He is not anthropomorphic: his body is entirely human without fur or feathers or scales, while only his head is that of an animal.

 Theriocephaluses come in at least three flavors: the animan, the verman and anumus.

• The animan (plural animen) is an animal-headed aasimar descended from immigrants from the upper plane ruled by the beast lords. They have the heads of terrestrial vertebrates (i.e. mammals, reptiles, avians and amphibians). An animan is a humanoid with the aasimar tag.
• The verman (plural vermen) is a vermin-headed tiefling descended from the forgotten creations of a demon lord. They have the heads of terrestrial invertebrates (e.g. arthropods and gastropods). A verman is a humanoid with the tiefling tag.
• The anumus (plural anumi) are created from beasts given a special potion made from the mystical anumi plant. They may have the heads of any terrestrial animal that is given the anumi potion. An anumus is a humanoid with the beastfolk tag.

Sources: The anumus is from Remarkable Races: The Anumus by Alluria Publishing. The animan and verman are from Legends & Lairs: Mythic Races by Fantasy Flight Games.