pachyderm

nouns

any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus
pachyderm
is derived from
pachydermic
is derived from
pachydermous
is derived from
pachydermatous
is derived from
pachydermal
is a type of (narrower)
mammals having a placenta; all mammals except monotremes and marsupials
eutherian, eutherian mammal, placental, placental mammal