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
Penguins have a gland above their eye that turns saltwater into freshwater.
12
In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
7
Denmark has twice as many pigs as there are people.
66
Cows can sleep standing up, but they can only dream lying down.
745
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20