Australia’s military will cull up to 500 wild kangaroos on a military base in the capital city of Canberra after authorities determined Friday that it would be too costly to relocate them. Officials say overgrazing ‘roos are endangering native grassland, a local lizard, and the threatened golden sun moth. A plan to shoot the animals was abandoned after police warned that stray bullets could strike nearby residents or protesters, so the kangaroos will be tranquilized and then given lethal injections.