I have armadillos in my yard at night, makes the dogs bark like crazy, ever seen one?
Yes, those little creatures with leather-like armored shells are creepy!
They are a nuisance but Armadillos are often used in the study of leprosy
Armadillo
Armadillos (from Spanish "little armoured one") are New World placental mammals in the order Cingulata. The Chlamyphoridae and Dasypodidae are the only surviving families in the order, which is part of the superorder Xenarthra, along with the anteaters and sloths. Nine extinct genera and 21 extant species of armadillo have been described, some of which are distinguished by the number of bands on their armour. All species are native to the Americas, where they inhabit a variety of different environments. 
Armadillos are characterized by a
culture medium on a very limited basis by researcher Arvind Dhople. Since "in vitro" cultivation is not generally possible, it has instead been grown in mouse foot pads and more recently in nine-banded armadillos because they, like humans, are susceptible to leprosy. Armadillos have a much lower body temperature than most mammals, and the bacteria are often found in their lungs, liver, and spleen. This can be used as a diagnostic test for the presence of bacilli in body lesions of suspected leprosy patients. The difficulty