Kangaroo culling is a controversial issue in Australia, where the government has implemented culls to control populations. The issue is particularly emotive because of the kangaroo’s status as a national icon, with some detractors viewing the culls as an attack on Australia’s identity. Although indigenous to Australia, kangaroos are, in some areas, threatening the grassland ecosystem. Overgrazing causes soil erosion thus threatening the survival of certain rare species of lizard. Furthermore, in overpopulated areas, food scarcity is driving kangaroos to damage wheat crops. Protesters typically oppose the cull on grounds that it is inhumane. Instead, they favour the relocation of kangaroos to suitable new habitats, or sterilizing the animals in overpopulated areas. Sterilization, however, will not have an immediate effect on the problems of limited resources and land degradation through grazing. Not only is transporting large numbers of kangaroos an expensive undertaking, critics believe it would potentially traumatize the relocated kangaroos and ultimately threaten the new habitat.