The main collective noun for Armadillos is a roll. This term is derived from the behavior of the Armadillo, which is to curl up into a ball when threatened. This behavior is known as “rolling up” and is the source of the collective noun. The term is also used to refer to a group of Armadillos, as they often travel in groups.
What Is a Group of Armadillos Called? – Armadillos Collective Nouns
