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. Most kinds of pangolins climb well, especially the arboreal species, which have prehensile tails. Unless alarmed, pangolins make slow and deliberate movements. They often walk only on the hind legs, with the tail trailing behind as a brace.