Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Rattlesnake mating sessions have been known to last more than 22 hours.
232
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
