One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
A group of frogs is called an army.
51
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
Some ribbon worms will eat themselves if they can't find any food.
-33
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The average 1 1/4 lb. lobster is 7 to 9 years old.
13