Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Rattlesnake mating sessions have been known to last more than 22 hours.
232
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
The octopus does not have a blind spot.
273
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268