The colossal squid has the largest eyes in the world.
4
The elephant brain weighs about 6,000g.
274
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8