The reindeer is the only mammal that can see UV light.
17
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Dogs have been man's pet for over 14,000 years.
224
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A scorpion can hold its breath for up to 6 days.
19
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Cats sleep for 70% of their lives.
8
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12