The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Rattlesnake mating sessions have been known to last more than 22 hours.
232
A group of unicorns is called a blessing.
304
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
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
A giraffe's kick is so powerful that it can decapitate a lion.
216
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6