Use this domain for mammals with few or no teeth--anteaters (phylum Chordata, class Mammalia, order Edentata), pangolins (phylum Chordata, class Mammalia, order Pholidota), aardvarks (phylum Chordata, class Mammalia, order Tubulidentata), and platypus--mammals that lay eggs (phylum Chordata, class Mammalia, order Monotremata).