An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The male seahorse carries babies and 'gives birth' to them instead of the female.
7