Cats and dogs can hear ultrasound.
350
There are approximately three chickens for every human on Earth.
13
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Only 3% of bird species have penises.
0
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
Dogs have been man's pet for over 14,000 years.
224