Delicate Arch, Arches National Park, Moab, Utah, perhaps? Oh, I'm smiling for the camera, but the hike up about did me in. I said every bad word I could remember or make up. Finally, I was reduced to telling myself, "Your ancestors were Vikings! Your ancestors were Vikings!" That got me up the straight out climing up the side of a mountain section.
Coming down was much easier. Except when twisting your ankle on uneven rock and some people find it a photo-op.
Never saw a single one. Nor the mountains lions we were told to fight off if attacked. Sure.