There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Cats recognise the voice of their owner, but never evolved to care.
22
A group of unicorns is called a blessing.
304
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
The male seahorse carries babies and 'gives birth' to them instead of the female.
7