Big Hairy Armadillo - Diagnosis

Diagnosis

When trying to determine the differences between these species, a few noticeable traits stand out. The first difference is size; C. villosus is the larger species. It can grow to a length of 34 cm (13 in). C. vellerosus is much smaller, being able to fit in the palm of a hand when fully grown, usually weighing only a kilogram. Both species are covered with much more hair than any other armadillos, mostly sprouting from its underside or between the bony plates along its back. When C. villosus is sexually aroused with an erect penis, species determination is easier. Its penis can be as long as 35 mm, and usually remains completely withdrawn inside a skin receptacle. The lesser hairy armadillo can usually be found in higher altitudes because its smaller size and slower metabolic rate helps it survive in areas with less food.