Sharks have been on the planet longer than trees.
14
A domestic cat can sprint at about 31 miles per hour.
274
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
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
When you shave a guinea pig it looks like a little hippo.
19
Cats and dogs can hear ultrasound.
350
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12