A puppy is born blind, deaf, and toothless.
16
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Sharks, like other fish, have their reproductive organs in their chests.
248
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47