Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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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
Squirrels forget where they hide about half of their nuts.
698
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Sloths take two weeks to digest their food.
243
There are approximately three chickens for every human on Earth.
13