Southern Rocky Mountain Gray Wolf walks along tree line past a cave entrance, then pauses to nuzzle something on the ground

southern rocky mountain wolf wolf conservation center southern rocky mountain grey wolf southern rocky mountain gray wolf rocky mountain gray wolf rocky mountain wolf white wolf rocky mountain grey wolf canis lupus canis lupus youngi gray wolf grey wolf wolves animal sanctuary wolf critically endangered species animal conservation canine endangered species conservation apex predator north america nuzzle fall autumn predator startled environmentalism lupus rocky mountains lupine cave new york