Claim: The Kitti's hog-nosed bat is capable of true and sustained flight.
Evidence: Kitti 's hog-nosed bat -LRB- Craseonycteris thonglongyai -RRB- , also known as the bumblebee bat , is a vulnerable species of bat and the only extant member of the family Craseonycteridae.
Bats are mammals of the order Chiroptera -LRB- -LSB- kaɪˈrɒptərə -RSB- from the χείρ - cheir , `` hand '' and πτερόν - pteron , `` wing '' -RRB- whose forelimbs form webbed wings , making them the only mammals naturally capable of true and sustained flight.