A lion in the wild usually makes no more than twenty kills a year.
186
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
Cows can sleep standing up, but they can only dream lying down.
745
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217