The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Condoms were originally made of animal intestines or linen.
347
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
When dragonflies mate, their tails form a love heart.
22
The reindeer is the only mammal that can see UV light.
17