When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
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
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Denmark has twice as many pigs as there are people.
66