animals Australian bad-tempered black captive captive-breeding carnivorous carrion-feeder competitive devils endangered ferocious-feeder incredibly-fierce-appearance large-broad-head loud mammal marsupials muscular nocturnal Noisy powerful powerful-jaws protected pungent-odour rotund sarcophilus-harrisii scavenger screeching short-thick-tail spine-chilling-screeches squat-build stocky tasmania Tasmanian-devils thick-set vocalisations