Otter tracks in hydrothermally heated mud next to "frost flowers" at the edge of the Yellowstone River. "The tracks are at the end of an otter slide down a snow slope that leads up to where an otter has eaten several fish leaving only shards of skin, the coarser bones, and a nearby midden of urine and scat," Fuller says
Otter tracks in hydrothermally heated mud next to "frost flowers" at the edge of the Yellowstone River. "The tracks are at the end of an otter slide down a snow slope that leads up to where an otter has eaten several fish leaving only shards of skin, the coarser bones, and a nearby midden of urine and scat," Fuller says