He took a look back with his piercing yellow eyes and then he disappeared into the woods behind him. He was a Gray Wolf (I used the pronoun “he” but the sex was unknown) in Yellowstone National Park. We were so lucky on our first morning there last week to see wolves. It turned out to be a dog dominant week there between daily sightings of both Gray Wolves and Coyotes. Wolves from the Wapiti Lake Pack, or it could have been the Firehole River Pack (we heard reports that either pack might have done it) took down a bull Bison on the edge of the Firehole River a day or two before we arrived. Wolves, Coyotes, Common Ravens, Bald Eagles, and others we did not witness, fed on the carcass the entire week we were there until just the cape, skull, and a few bones, by now dragged across the river to the opposite shore, remained.