The elephant brain weighs about 6,000g.
274
The colossal squid has the largest eyes in the world.
4
Cats and dogs can hear ultrasound.
350
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Penguins have a gland above their eye that turns saltwater into freshwater.
12