- Armadillos have four babies at a time, always all the same sex. They are perfect quadruplets, as the fertilized cell split into quarters, resulting in four identical armadillos. Some have suggested that the adaptive benefit may be that since all of the quadruplets are the same sex there is no danger of inbreeding between the littermates (armadillos don't really have a territory, so the young just wander away as they mature, rather than being driven off as they become adult).