When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Only 3% of bird species have penises.
0
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Whales and dolphins can't taste anything other than salt.
11