Cats recognise the voice of their owner, but never evolved to care.
22
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
There are approximately three chickens for every human on Earth.
13
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A lion in the wild usually makes no more than twenty kills a year.
186
A 42-foot sperm whale has about 7 tons of oil in it.
209
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328