Strolling along a fence line in Rolling Hills, Wyoming, I found myself on the same side of the fence as a group of proghorn. (We never call them that here, we call them antelope, despite decades of patient instruction by wildlife biologists. Biologists share painstaking research of the proghorn genetic line to prove to us they aren't antelope, and we all say that's very interesting, and call them antelope anyway, just like we call the fluffy death cows buffalo and not bison.