Condoms were originally made of animal intestines or linen.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
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
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