Talk:Faunus/@comment-29747376-20161120210024/@comment-25110963-20161208232749

If you have wings, you'll need those bigger organs, maybe even a few hollowed bones.

If I use the fish faunus as an example it makes more sense. Gills are incompatable with the human lungs, and requires a different organ to convert the oxygen in the water through the gills. That's already more than one trait.