Tasmanian devils are reproducing at a younger age to offset a contagious cancer epidemic, the Daily Telegraph reports. The ill-tempered marsupials, suffering from tumors that cut their lifespan in half, are now breeding at age 1 instead of 2 or 3. "We could be seeing evolution occurring before our eyes," one expert told the AP—though the devils may still die off in about 25 years. (More Tasmanian Devil stories.)