Is it connected to their habitat, the climate they live in, or their predators? It may be all of the above!
The skin of a hippopotamus is two inches thick all over its body. Its thick hide serves a few purposes.
Monarchs migrate once a year for the winter. The timing of this migration is synced with their unusual life cycle, which passes through four generations per year.
Dromedary or Arabian camel, Camelus dromedarius, in the long golden grass in an Egyptian meadow.
Nine-banded Armadillo feeding on corn. Armadillos are covered in bony plates that create their ‘armor’.