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人们认为,当脊椎动物第一次来到陆地上,不再依靠吸力进食时,舌头就已经进化了。从那以后,它们通过采用各种各样的功能帮助推进了动物的多样化,例如抽取花蜜、钩住猎物、塑造语言,以及澳大利亚北部蓝舌石龙子会惊吓敌人等。

Tongues are thought to have evolved when vertebrates first moved onto land and could no longer rely on suction to ingest food.Since then,they have helped drive animal diversification by adopting.functions as varied as pumping nectar,snagging prey,shaping speech,and,in the case of Australia's northern blue-tongued skink(Tliqua scincoides intermedia),startling enemies.