Taxonomic ranks

Multicellular, heterotrophic organisms.

Even-toed ungulates bearing weight on the third and fourth digits.

Feathered, beaked vertebrates with forelimbs adapted to flight.

Cursorial pack carnivorans with non-retractile claws.

Dogs, wolves, and jackals.

Placental mammals with carnassial teeth adapted to shearing flesh.

Antlered ruminants that shed and regrow their headgear each year.

True deer.

Vertebrates possessing a central nerve cord.

Large-brained perching birds noted for tool use and long memory.

Crows and ravens.

True dragons.

Apex scaled reptiles with variant limb and flight configurations.

Large quadrupeds and hexapods with high-metabolism scutes and specialized sternums.

Ambush carnivorans with retractile claws and binocular vision.

Small cats, wild and domestic.

Great apes, including the speaking peoples.

Humans and their near kin.

Warm-blooded vertebrates that nurse their young.

Great cats — lions, tigers, leopards, and their magical kin.

Perching birds — the largest order of the class.

Grasping-handed mammals with forward-facing eyes and enlarged braincases.

Scaled, egg-laying amniotes.

Wyverns, with wing and forelimb integrated.