the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Tetrapoda (no rank)
Amniota (no rank)
Mammalia (class)
Eutheria (superorder)
Rodentia (order)
Hystricognathi (suborder)
Hydrochoeridae (family)
[hide inferior taxa]
Hydrochaeris hydrochaeris (species)
Hydrochoerus hydrochaeris (species)