Defensive stoning by baboons

@article{Hamilton1975DefensiveSB,
  title={Defensive stoning by baboons},
  author={William John Hamilton and Ruth E. Buskirk and William H. Buskirk},
  journal={Nature},
  year={1975},
  volume={256},
  pages={488-489}
}
REPORTS of the use of tools in offence or defence by wild animals is limited to accounts of chimpanzees throwing branches at conspecifics, potential predators and at human observers1. Anecdotal accounts of stone throwing by baboons2 have been dismissed on the basis of the unreliability of correspondents and the improbability of oriented throwing by a quadruped anatomically incapable of overhand throwing3. In spite of several years of field study elsewhere in Africa, often in rocky terrain… Expand
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References

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More on Tool-Use Among Primates
that the course of cultural evolution, like that of bio-evolution, is strewn with the wreckage of ingeniously functional dinosaurs. This does not deter us from inquiry into the func­ tionalExpand