Only 3% of bird species have penises.
0
Cats recognise the voice of their owner, but never evolved to care.
22
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
The Basenji dog is the only dog that is not able to bark.
4
There are approximately three chickens for every human on Earth.
13