The elephant brain weighs about 6,000g.
274
When cats are happy, they may squeeze their eyes shut.
10
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 a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Jellyfish as a species are actually older than dinosaurs and sharks.
383
A cow produces around 200,000 glasses of milk in her lifetime.
373
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
Cats recognise the voice of their owner, but never evolved to care.
22