Board Thread:General Discussion/@comment-124.169.181.62-20141123050550/@comment-71.38.106.28-20141202052308

Appearance isn't necessarily an indication of whether an individual is human or Faunus. Tukson lacked any identifying non-human features (that we could see, anyway) until he unsheathed his claws. Additionally, we were told there was at least one half-Faunus that we've seen without realizing we saw him/her. Which indicates that, at least in halfbreeds, it's possible to go without any kind of non-human characteristic showing.

This would indicate that it's entirely possible that Qrow and Raven are in fact Faunus. Who just happen to look human because they have no outward indication of their nature.