The woolly flying squirrel (Eupetaurus cinereus) is the sole species placed in the genus Eupetaurus. Until recently scientific knowledge of this rare species was limited to 11 skins collected in the late nineteenth century. However, recent research has confirmed that it remains in Pakistani Kashmir. It is the longest member of the family Sciuridae and the biggest gliding animal known, but observations confirm that despite its size, it does glide effectively like other flying squirrels.