资源环境科技发展态势分析平台

NSF-funded researchers have discovered that wolves in Yellowstone National Park preferentially hunted bulls who already had shed their antlers over those who still had them during late winter. The finding suggests that antlers are used for more than just competing for cows -- that they help deter predators, too -- which could help explain why bulls shed their antlers long after the rut. Full Story

Source
University of Montana