Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Cats and dogs can hear ultrasound.
350
Condoms were originally made of animal intestines or linen.
347
In Australia, there are spiders big enough to eat snakes.
20
A scorpion can hold its breath for up to 6 days.
19
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402