Forehead rubbing by male deer on buck rubs presumably sends a great deal of information to other members of the same species.
雄鹿摩擦前额很可能向同类中的其它成员发出了大量信息。
Second, because only male deer rub, the buck rub and its associated chemicals indicate the sex of the deer producing the rub.
第二，因为只有雄鹿会做出摩擦动作，摩擦动作和与之相关的化学物质表明了制造擦痕的鹿的性别。
Adult male deer usually produce rubs in late summer or early autumn when the outer velvet layer is being shed from their antlers.
成年公鹿通常在夏末或初秋鹿茸脱落时制造擦痕。
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