Feral pigs (Sus scrofa) are among Australia's most destructive invasive species. Originally brought as livestock with the First Fleet in 1788, they quickly established wild populations. Without control, feral pig numbers can increase by up to 86% annually, with particularly high concentrations in Queensland, New South Wales, and the Northern Territory.
Feral pigs thrive in wetlands, floodplains, and along watercourses where food and shelter are abundant. In arid regions, their survival depends on permanent water sources.
These animals severely impact natural ecosystems by preying on small mammals, birds, reptiles, amphibians, aquatic species, and the eggs of native animals. They compete with native species for resources, cause extensive environmental damage, and threaten critical ecological communities vital to Australia's biodiversity.
In agriculture, feral pigs prey on newborn livestock such as lambs, calves, and kids. They also reduce crop and pasture yields, destroy infrastructure, degrade water sources and soil, spread invasive weeds, and transmit diseases affecting livestock, humans, and plants.
Culturally, feral pigs damage significant heritage sites and values. However, in some First Nations communities, they are used as an alternative food source and play a role in teaching traditional skills and strengthening kinship systems. There are ongoing efforts to turn pig management into economic opportunities for remote communities.