3 years ago I was hunting antelope out in the northern part of the Red Desert in Wy, near an area called Bison Basin. I was hunting alone and put on a short stalk over a ridge on a group and picked out a nice buck and put the shot on him he dropped and I made my way out to field dress and tag...
That would have been a beaver slapping his tail in the water. Most of those lakes below 10K up there have a beaver swimming around in them. Seen it happen often.