An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
A group of kittens is called a "kindle".
10
Cats recognise the voice of their owner, but never evolved to care.
22
When cats are happy, they may squeeze their eyes shut.
10
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57