The most expensive cow in the world was sold in 2009 for $1.2 million.
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Dogs have been man's pet for over 14,000 years.
224
Early American humans hunted car-size armadillos and used their shells for houses.
12
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
The largest earthworm on record was found in South Africa and measured 22 feet.
151
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25