Yellowstone is home to a small cougar population, but theyare rare and seldom seen. The noisy ruffed grouse or “thunder chicken” is far less elusive, as the males “drum” their wings loudly in the breeding season, advertising their presence to any nearby female birds.

Nós visitamos Bryce Canyon, onde valiosos fósseis ajudaram a entender a história geológica do planeta. As torres de arenito do cânion são de tirar o fôlego.