Lizards of the genus Draco have made unusual use of their rib bones. Rather than using them to protect their torsos, these arboreal reptiles instead spread their ribs out like wings.

 

Some species have been recorded making flights as long as 60 meters without losing much height.

 

Other species of lizards, including several gecko species, have evolved extra flaps of skin along their tails, heads, torsos, toes and limbs that also allow them to glide from tree to tree.