A cat's tail contains nearly 10 percent of all the bones in its body.
An elephant's skin can be an inch (2.5 cm) thick in places.
In 1963, a cat named Felix became the first feline in space.
Watch as this adorable dolphin play catch with a very lucky little boy.
Two billion people on Earth eat insects as part of their regular diet.
All cats were considered sacred in ancient Egypt. If you killed a cat, you could be sentenced to death.
Camels originated in North America, but became extinct on the continent 10,000 years ago.