Porcupine caribou (Grant's caribou) (Rangifer tarandus granti) cow among fall colors, Denali National Park and Preserve, Alaska, United States of America, North America

Porcupine caribou (Grant's caribou) (Rangifer tarandus granti) cow, Denali National Park, Alaska, United States of America

An adult bull porcupine caribou (Rangifer tarandus granti), hiding in fall color changes in Denali National Park, Alaska, United States of America, North America

Bull porcupine caribou (Grant's caribou) (Rangifer tarandus granti), Denali National Park, Alaska, United States of America