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
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Condoms were originally made of animal intestines or linen.
347
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
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10