Photo: Tasmanian Devils Spread Cancer by Biting, Study Says

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Captured in October 2005, this Tasmanian devil is in an advanced stage of devil facial tumor disease. The cancer deforms the devils' mouths, and the animals often starve, because they can no longer bite or chew. The disease is spread through bites during mating fights, a recent study says.


Photograph by Adam Pretty/Getty Images

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