Here's a thread of some photos from my drive to Yellowstone today. These are the only species of big mammals I saw: a few hundred bison, a few dozen elk, and a few pronghorn.
"I swear to God, officer, the bison DNA on my bumper is because he rubbed on it himself, I had nothing to do with it!"
When you're out on the trail looking for wildlife, they're probably back at the trailhead checking out your car.