The dingo was completely isolated from other canines on the Australian mainland for more than 5,000 years, until domestic dogs arrived on the scene. Subsequent concerns about livestock loss formed the basis of Australia's "wild dog" (dingo) pest control programs, which continue today. Stretching 5,614km across Australia, the "dingo fence" or "dog fence" was built in the 1880s to keep dingoes away from livestock in the southeast.