Vampire bats - the only mammals that feed on blood. With this gastronomic passions associated exceptionally fine development of the senses, through which, by the way, the bats have received from Mother Nature a very unsightly nose. This feeling allows animals to "see" the blood coursing through your veins.
Nose "Vampire" is equipped with a kind of infrared detector reacts to changes in body temperature from a distance. This is surprising because other mammals, including us, have to touch the object to tell it warm or cold. But the most striking another: they are able to determine which Vienna is most interest to them.
Their "heat sensors" are so perfect that they do not have to waste time, several times running teeth into the flesh of his victim. Vampires go directly into a vein on the first try.
via factroom.ru