These scales are made up of keratin, the same material which makes the human fingernails, toenails, and tetrapod claws. These scales are soft in the newborns but, they harden as the animals grow up. The physical appearance of pangolins is marked by large hardened plate-like scales that overlap each other. These species are nocturnal, and they mainly feed on ants and termites that get captured with their long tongues. They can live in hollow trees or burrows depending on their type. Pangolins have large, protective keratin scales covering their skin which has a material that is very much like the one in our fingernails and toenails. Several pangolin species that have been extinct are also known. The size of the pangolin species approximately ranges from about 30 cm to 100 cm (in inches, it ranges from 12 inches to 39 inches). Manis consists of four species that are found in Asia, whereas Phataginus and Smutsia include two species each, all of which are found in the sub-Saharan region in Africa. One of their extant family is Manidae which has three genera. Pangolins are scaly mammals that belong to the order Pholidota.
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