I'm personally not convinced that Au Ra horns are actually ears.
Au Ra, despite looking reptilian, are mammals. That's plain as the... er... tits on an Au Ra female. That said, they do have some characteristics of reptiles or birds: some scales being the big one. Neither reptiles nor birds have big external ear structures. Some reptiles have external ears, in the sense that their eardrums are basically right there on the surface, but most reptiles and all birds have recessed ears with no external structures, and they hear very well.
I see no reason why Au Ra wouldn't have similar ears. They all have full heads of hair, which would cover a bird-like ear hole. The horns, then, would simply be horns. They might be hollow structures that improve their vocal resonance, or they might be solid horns, or something else entirely. But there's no reason to suspect that, since you see no external ear and you do see external horns, that the horns are actually organs of hearing.
Au Ra, despite looking reptilian, are mammals. That's plain as the... er... tits on an Au Ra female. That said, they do have some characteristics of reptiles or birds: some scales being the big one. Neither reptiles nor birds have big external ear structures. Some reptiles have external ears, in the sense that their eardrums are basically right there on the surface, but most reptiles and all birds have recessed ears with no external structures, and they hear very well.
I see no reason why Au Ra wouldn't have similar ears. They all have full heads of hair, which would cover a bird-like ear hole. The horns, then, would simply be horns. They might be hollow structures that improve their vocal resonance, or they might be solid horns, or something else entirely. But there's no reason to suspect that, since you see no external ear and you do see external horns, that the horns are actually organs of hearing.
