You are not using a standards compliant browser. Because of this you may notice minor glitches in the rendering of this page. Please upgrade to a compliant browser for optimal viewing:
Firefox Internet Explorer 7 Safari (Mac and PC)
Gentle Tasmanian devils may be key to species' survival, study shows Aggressive devils are more likely to contract an infectious cancer which is threatening to wipe out the species in the wildTasmanian devils must evolve to be less aggressive if they are to avoid becoming extinct, suggests new research.