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
Poon Lim survived 133 days alone on a raft at sea by fishing, drinking bird blood, and killing a shark with a jug of water.
21
Most of the dust underneath your bed is actually your own dead skin.
251
Cockroaches can live for 9 days after their head has been cut off.
140