There are three known wild contagious cancers in vertebrates, and Tasmanian devils have two of them. What does that mean for the endangered marsupials?
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Transmissible cancers, which occur only rarely in the animal kingdom, are spread by the transfer of living cancer cells. In the case of Tasmanian devils, the cells are transferred through biting a behavior that is common in devils especially in fights over mates and food. Read more here.