The original name for the butterfly was 'flutterby'!
121
To find out if a watermelon is ripe, knock it, and if it sounds hollow then it is ripe.
84
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
The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
There are no penguins in the North Pole.
56
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
