Premise: Bats are mammals of the order Chiroptera ( [ kaɪˈrɒptərə ] from the χείρ - cheir , `` hand '' and πτερόν - pteron , `` wing '' ) whose forelimbs form webbed wings , making them the only mammals naturally capable of true and sustained flight . Kitti 's hog-nosed bat ( Craseonycteris thonglongyai ) , also known as the bumblebee bat , is a vulnerable species of bat and the only extant member of the family Craseonycteridae . Kitti 's hog-nosed bat is the smallest species of bat and arguably the world 's smallest mammal .
Hypothesis: The Kitti's hog-nosed bat is capable of true and sustained flight.
Label: ENTAILMENT