Sloths take two weeks to digest their food.
243
Tigers can see 6 times better at night than humans.
305
Parrot parents "name" their children with a signature call.
112
A 42-foot sperm whale has about 7 tons of oil in it.
209
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
Whales and dolphins can't taste anything other than salt.
11