When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A group of unicorns is called a blessing.
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When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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