lesser mouse-eared bat myotis blythii in an artificial cave

animals bat big biophysics blood blythii brown caucasus cave caving clawed common dasycneme disease disgust down dream dungeon dwellers european fear flight grasping hang hibernate hibernation horror infection little mammals mouse movies myotis nature north paw radar silent sleep sonar speleology spelunking strange subterranean suck ultrasound unpleasant upside vampire vectors vespertilionidae winghanded wintering wintertime witch witchcraft