Rattlesnake mating sessions have been known to last more than 22 hours.
232
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Squirrels forget where they hide about half of their nuts.
698
Nicole Kidman is scared of butterflies.
65
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