One sunny morning in late summer, naturalist Doug Moore was driving in Madera Canyon in southeastern Arizona when he noticed a large animal on the road. He saw that the creature had a long snout, slender body, and long tail with rings of light and dark fur. At first he thought it looked like a monkey. After stopping his car for a better look, Doug saw that it wasn't a monkey at all--it was a white-nosed coati These small mammals are rarely seen in...