The elephant brain weighs about 6,000g.
274
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
When you shave a guinea pig it looks like a little hippo.
19
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16