One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Rattlesnake mating sessions have been known to last more than 22 hours.
232
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A dairy cow can produce more milk when listening to music.
446
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10