Condoms were originally made of animal intestines or linen.
347
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Lurch, a Watusi bull, had the largest horns in the world.
32
The elephant brain weighs about 6,000g.
274
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10