Jumping fleas can accelerate 50 times faster than the space shuttle.
218
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Cats sleep for 70% of their lives.
8
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
A lion in the wild usually makes no more than twenty kills a year.
186
The largest earthworm on record was found in South Africa and measured 22 feet.
151