In response to a specific pattern of begging behavior engaged in by animals that have failed to obtain a meal, vampire bats that have fed will regurgitate a part of their blood meal, not only for their young, but for other adult members of the colony, proving once and for all that we live in a world rife with natural instances of selfless beauty and altruism. We need only to be intoxicated to truly understand and appreciate them. Like, really fucked up.