Kitti's hog-nosed bat (Craseonycteris thonglongyai) is not only the smallest bat in the world, but also the smallest mammal in existence, and the sole living species of the family Craseonycteridae. Its extinction would not only be the loss of an incredibly unique species, but an entire branch of the evolutionary tree would vanish from our planet. Kitti’s hog-nosed bat has long greyish-brown fur on its back, and shorter, paler fur on its underparts. Its common name arises from its flat, fleshy, pig-like muzzle, situated between extremely small eyes concealed by facial hair. Their large and membranous ears, with a long and well-developed tragus, enhance their ability to pinpoint the echoes with which they navigate. Male Kitti’s hog-nosed bats possess a rounded, glandular swelling on the lower portion of the throat; this is either less prominent or completely absent in females.