Sloths take two weeks to digest their food.
243
When you shave a guinea pig it looks like a little hippo.
19
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17