The European Red Fox
Lacking predators (with the exception of wild dogs) foxes have successfully spread widely throughout mainland Australia both in rural and urban environments. Their diet can range from scavenging most food stuffs including fruit to eating backyard poultry, eggs and other vermin. As with most invasive feral species their diet also includes small to medium native animals, reptiles, birds, eggs and insects. The extinction of several small to medium marsupials and rodent species has also been linked to fox predation.
In addition to their impact on the environment and native species, their economic impact on commercial poultry producers, sheep and goat farmers has also been costly; foxes will prey on lambs and kids. They are also carriers of parvo virus, distemper and mange that can be harmful to humans and pets.