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
The elephant brain weighs about 6,000g.
274
When the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
25
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17