Transcript
ADWSG_JtcEw • Vampire Bats Who Share Blood With Their Friends
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Kind: captions Language: en [Music] have you ever shared your dinner with a friend who is hungry then you're more like a vampire bat than you might have thought vampire bats practice hematophagy which means they feed exclusively on blood but unlike their mythical counterparts vampire bats don't actually suck blood instead they use their razor sharp teeth to bite mammals typically horses and cows although sometimes humans and then lap up the blood that escapes from the wound fortunately for their victims vampire bats don't take enough blood to kill but finding enough blood to eat isn't always easy vampire bats hunt on most nights but if they're unsuccessful for more than two nights in a row they will starve to death fortunately vampire bats just like people are often willing to help their friends in fact to prevent a fellow bat from starving female vampire bats will sometimes regurgitate a portion of their most recent bloodmeal into the mouths of nearby female vampire bats but proximity alone doesn't guarantee this Behavior vampire bats use a practice called reciprocal altruism they learn to recognize bats who've shared with them in the past and they only share with them this includes familial relatives and current or former Roost mates basically their friends so far in the wild scientists haven't found any evidence that male vampire B BS participate in this food sharing process and while the reason for the Divide between Sexes isn't completely understood what is clear is that female vampire bats like humans get by with a Little Help from their friends [Music]