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Which deer species has antlers in both males and females?
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deer
Male white-tailed deer (Odocoileus virginianus).
In all deer species except one, only the males grow antlers. The reindeer (Rangifer tarandus), also known as caribou, is the only deer species in which both males and females carry antlers.1234
Female reindeer retain their antlers throughout the winter, which helps them defend feeding sites from other members of their herd. In contrast, male reindeer typically shed their antlers in late fall.4