 Genetic analysis suggests that the "Molossops" species are closely related to those in the genus "Cynomops"; they are in a clade along with the genera "Eumops", "Molossus", "Promops", "Nyctinomops", and "Neoplatymops".The dwarf dog-faced bat is considered small for the free-tailed bat family, Molossidae.Individuals have a total length of , forearm length of , and tail length of .