Condoms were originally made of animal intestines or linen.
347
A cow produces around 200,000 glasses of milk in her lifetime.
373
When dragonflies mate, their tails form a love heart.
22
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
When cats are happy, they may squeeze their eyes shut.
10
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
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