Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The reindeer is the only mammal that can see UV light.
17
Denmark has twice as many pigs as there are people.
66
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255