The lower jaw is a simple bladelike bone. There are no teeth. In the African species the pinna of the ear is not present, whereas in the Asiatic species the projecting part of the ear, or at least a thickened ridge, is present. This amazing organ has muscular roots that pass down through the chest cavity and anchor to the pelvis. The hind legs are long and stouter than the forelegs, and all the limbs have five clawed digits.
Females have two mammae in the chest region.
Pangolins inhabit forests, thick bush, and open or savannah country. Most kinds are nocturnal, but some are diurnal. Some species are terrestrial and live in burrows dug either by other animals or by themselves. Other species are arboreal and shelter in hollow trees. Ground burrows are about 15-20 cm in diameter, usually attain a depth of several meters, terminate in circular chambers as much as 2 meters in circumference, and are generally closed with dirt when occupied.