When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The seahorse is the only fish to have a neck.
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The cat brain weighs about 30g.
167
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57