SYDNEY — A pack of mice mauled a bedridden 89-year-old man at an Australian nursing home, shredding parts of his ears and prompting the government Thursday to launch an investigation into the facility. Federal Minister for Aging Justine Elliot ordered a probe into what the government-run nursing home in Queensland state was doing to protect residents, saying in a statement that the attack was "extremely disturbing and traumatic for residents and their families." Ray Hopper, a state opposition legislator who was alerted to the mauling by the man's family earlier this week, said the resident was found covered in blood by nursing staff Saturday. "An elderly, bedridden gentleman had the tops of his ears severely chewed, his head badly bitten and a very bad wound in the throat," Hopper said.