Cats recognise the voice of their owner, but never evolved to care.
22
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
The largest earthworm on record was found in South Africa and measured 22 feet.
151