Tigers can see 6 times better at night than humans.
305
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Whales and dolphins can't taste anything other than salt.
11
There are approximately three chickens for every human on Earth.
13
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When dragonflies mate, their tails form a love heart.
22