When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Whales and dolphins can't taste anything other than salt.
11
The cat brain weighs about 30g.
167
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
In Australia, there are spiders big enough to eat snakes.
20
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6