The largest big game species in Colorado, moose have few natural enemies. Because of this, they don't fear humans, often approaching people with a tone of curiosity over anything else. While moose aren't generally aggressive, they can be if they feel like their children or territory is threatened, especially during their "rut" season in the fall. If you see a moose, keep your distance, especially if you've got animals with you. If the moose starts to act aggressively, make sure your presence is known by talking while you slowly back away. If they charge, try to hide behind a large object that will block their path, like a car or tree.