Once Omri starts to take Little Bear outside, the Native American brave realizes that he's just entered a whole new world. And it's a scary world, a world full of danger. So long as he remains in the cupboard, Little Bear doesn't have to worry about any of the normal hazards associated with life in the great outdoors. But once he ventures forth into this strange new world with Omri, he knows that he must be prepared for any eventuality. For an Native American brave, this means that he needs to have weapons; he needs to have a bow and arrow. As well as needing weapons for self-defense, Little Bear also needs them for hunting deer. It's notable that now Little Bear is no longer cooped-up in a cupboard, he's starting to act more and more like a real Native American warrior.