Cats and dogs can hear ultrasound.
350
The elephant brain weighs about 6,000g.
274
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Sharks have been on the planet longer than trees.
14
There's a rare breed of pig that looks like a sheep.
14
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492