Armadillos (armored mammals) are the only other animals besides humans to host the leprosy bacillus. In 2011, the New England Journal of Medicine published an article formally linking the creature to human leprosy cases—people and armadillos tested in the study both shared the same exact strain of the disease.

Even if these animals can carry the bacteria, there is nothing to be scared about: leprosy remains a very rare disease, and only 5 percent of people are susceptible to it.