Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Giant Anteaters' front legs look like a panda.
48
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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