Nobody knows for sure; they might have been useful for keeping dinos dry, distracting predators or attracting mates, as peacocks do today.
没有人能够给出确切的答案，它们也许可以帮助恐龙保持干燥，转移掠食者的注意力或者吸引配偶，就像今天的孔雀一样。Perhaps the real reason why they did not plant their footprints on the dinosaur freeway is that they might have ended up as prey, as well.
它们为何没有在恐龙公路上留下足迹呢？真正的原因或许是它们同样亡于其它掠食者。Armed predators have been used in Libya "purely as [intelligence, surveillance and reconnaissance systems] until today, " Cartwright said.
卡特莱特说，到今天为止，武装“掠食者”战机已经在利比亚出动，只作为情报、侦察和监测系统使用。Movement is usually into surface waters at night to feed and into deeper waters to avoid predators during the day.
迁移通常是在晚上进入水表层觅食而在白天进入较深的水域避开掠食者。Each night the male Oreophryne embraces the egg mass, possibly to keep it moist or to protect it from small predators like insects.
每个夜晚，男性oreophryne包含卵块，尽可能保持它在潮湿或保护它防止小型的掠食者，像昆虫。Unable to fly or walk, Hesperornis needed to be wary of predators: sharks and plesiosaurs at sea, dinosaurs and pterosaurs on land.
由于不能飞也不能步行，黄昏鸟需要警惕掠食者们：水中有鲨鱼和蛇颈龙，岸上有恐龙和翼龙。The coelurosaurs helped found a dynasty that produced the largest and most feared land predators of all time.
虚骨龙类创建了一个王朝，专门诞生那个时期体积最大，最恐怖的陆上掠食者。He wrote, "It's against the interests of either predator or prey to eliminate the enemy. "
他写道：“除掉敌人既损害了掠食者的利益，也损害了被掠食者的利益”。Top predators in the Red Sea, geometric moray eels slither out of a hideout on the sea floor.
水底下的肖像图片画廊。顶端掠食者在红海，几何学图形的海鳗鱼不稳定的滑行来自藏身处的海底。