Board Thread:Speculation House/@comment-4606441-20131101054911/@comment-1173941-20140520072748

Here's something to think about. While the outward appearance of a Faunus can easily pass for a human, just by covering up one or two things, the body structures and internal features of Faunus seems to be affected more.

It's noted that many Faunus can see in the dark (probably nocturnal kind, like Blake and such), and we can see Sun performing feats you'd have to be a gymnast (or monkey) to perform. Not to mention, Blake's "Landing Strategy" from "The First Step", was intentionally omitted because "she would just land on her feet," much like the saying "A cat always lands on its feet". This alone requires a lot of adjustments to Blake's internal structures.

A bird Faunus is probable, though making it look right, while being physically possible, might be awkward.