Talk:Lizardman/@comment-200.59.28.200-20180408031201/@comment-45.56.46.26-20180710192906

I'm not sure why Birdmen particularly are classed as Heteromorphs.

The general classification of Heteromorph seems to include creatures which could not exist by normal rules of biology, such as undead, polymorphs, giant versions of small organisms, etc.

Basically, if there is no scientific objection to the innate abilities of a non-humanoid species, it should be demi-human. If there is such an objection, it should be a heteromorph. But we don't know what the objections are in every case, it isn't always immediately clear from the appearence.