Hey it could have been a guard llama, think hooves and teeth.
A few years ago, actually not far from Vail, I ran into a sheep drive. Half a dozen riders on the perimeter, pickups flagging at each end, and a pair of llamas. The lead car from the other direction was a big MB with California plates, stopped dead still. As the herd passed them and the llamas approached, the woman driver opened her window to get a better look at the llamas. One poked its’ head in the window and spit a giant glob right in her face. The hysteria and screams were delicious!