The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Sharks have been on the planet longer than trees.
14
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