Introduced from Australia in 1875, the red necked wallaby quickly adapted, and just as quickly would become a major pest. Numbers are high in the central South Island. The original hope, that the skins would become valuable never eventuated. Protection was removed in 1900, and a ' shoot on sight' label, was attached to the species. As one of the largest wallabies, it can easily be mistaken for a kangaroo. Males can weigh more than 20 kg and attain a head-body length of 90 cm.