Rattlesnake mating sessions have been known to last more than 22 hours.
Blue Whale Facts
Most elephants weigh less than a blue whale's tongue.
More Animals Facts
Rattlesnake mating sessions
World's Smartest Pig
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
The world's oldest crow is 118 years (estimated age).