Our guide, Patrick, was super friendly, flexible and knowledgeable. He was smart about where to go to see the best animals, and he was nimble about changing course if he heard any other information from his colleagues leading other tours. Thanks to Patrick, we saw grizzly bears, a moose mama and baby, beavers building a dam, pronghorn scaring off aggression from a coyote, and a herd of elk running by us on the road and then crossing in front of us with the big proud buck bringing up the rear making sure the rest got across. Besides the wildlife, we saw the stunning geologic features that make Yellowstone famous.