Only 3% of bird species have penises.
0
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A puppy is born blind, deaf, and toothless.
16
Dogs have been man's pet for over 14,000 years.
224