Cats and dogs can hear ultrasound.
350
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
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
Lobsters have blue blood.
476
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Denmark has twice as many pigs as there are people.
66