Life (root) » Animalia (Animals) » Chordata (Chordates) » Vertebrata (Vertebrataes) » Mammalia (Mammals) » Theria (Therians) » Placentalia (Placental Mammals) » Euarchontoglires (Primates, Rodents, and Allies) » Rodentia (Rodents) » Sciuromorpha (Squirrels, Dormice, and Mountain Beavers) » Sciuridae (Squirrels) » Sciurinae (Typical and Flying Squirrels) » Sciurini (Typical Squirrels) » Tamiasciurus (Pine Squirrels) » Tamiasciurus hudsonicus (American Red Squirrel)