Ground squirrels, for example, use alarm signals when a predator is lurking nearby, not only to warn their peers, but also to make it known to the attacker its cover is blown.

例如，地松鼠发现捕食者在附近潜伏时会发出报警，不仅是为了警示它们的伙伴，而且还让攻击者知道自己的隐蔽已是枉然。