In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
The reindeer is the only mammal that can see UV light.
17
There are more than one million animal species on Earth!
71
The average 1 1/4 lb. lobster is 7 to 9 years old.
13
The faster a kangaroo hops, the less energy it burns!
58
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Dogs have four toes on their hind feet, and five on their front feet.
179