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
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
In Australia, there are spiders big enough to eat snakes.
20
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Sloths take two weeks to digest their food.
243