Abert's squirrel, Abert squirrel, abert squirrels, abert's squirrels, aberts squirrel, aberts squirrels, tassel-eared squirrels, tassel-eared squirrel, tassel-ear squirrel, tassel eared squirrel, tree squirrel, squirrel, squirrels, rodent, rodents, mammals, mammal, Grand Canyon, Grand Canyon National Park, Arizona wildlife, North America, horizontal, arizona, wildlife, animal, animals, fauna, Sciurus aberti, leesonphoto