Bat's bons are not hollow. but they're also built for flight. To be honets, any creature with wings coming out their back would not be capable of true flight, maybe gliding, butnot true flight. Proportions are wrong, the muscles aren't int eh right places, etc. Cat's aren't built for flight.
Note: To be fair... I only know this because I was oing to make a species with wings out their backs, and di research, only to find it was impossible. I still might, hwoever make them glide... >_>
That's why i'm saying hollow bones and make them small. Though they technically coldnt work int he real world, this is star wars. Make them close enough to the real world, and they're acceptable.
[member="sabrina"]