The discovery that elephants dislike ants came when Dr Palmer and colleague Dr Jacob Goheen noticed elephants avoiding a species of acacia tree in the Kenyan plains.

帕尔默博士与其同事雅各布·歌辛博士在肯尼亚平原上注意到大象总是躲开一种金合欢树的物种时，发现了大象惧怕蚂蚁这一现象。

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"The elephants wouldn't even touch the branches with ants on - they could smell the ants and knew it would be painful to eat them", says Professor Goheen.

BBC: Ants work with acacia trees to prevent elephant damage