A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
There's a rare breed of pig that looks like a sheep.
14
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
When cats are happy, they may squeeze their eyes shut.
10
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18