Pawprints and poo could be used to help save tigers and other endangered species from extinction, say conservationists.
自然资源保护论者声称：脚印和粪便有助于挽救老虎及其它濒危动物。
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Dr Jhala and colleagues assessed their method by collecting pawprints and faeces at 21 forest sites in central and northern India.
Jhala博士和同事们通过在印度中部和北部的21座森林里收集脚印和粪便来评估他们的方法。
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Wherever it went, it left behind it a trail of dead deer and small animals like rabbits. Pawprints were seen in a number of places and puma fur was found clinging to bushes.