If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Drivers kill more deer than hunters do.
660
Squirrels forget where they hide about half of their nuts.
698
A dairy cow can produce more milk when listening to music.
446
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6