Only 3% of bird species have penises.
0
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
A cow produces around 200,000 glasses of milk in her lifetime.
373
Denmark has twice as many pigs as there are people.
66
When cats are happy, they may squeeze their eyes shut.
10
Cats recognise the voice of their owner, but never evolved to care.
22
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40