The Montana based non-profit, Working Dogs for Conservation, http://www.workingdogsforconservation.org/, trains dogs to sniff out invasive plants. The dogs can sniff out at least 5 species, including Dyer’s Woad (Isatis tinctoria). Their noses are especially useful in detecting small populations of plants in rough country. Other work for the dogs includes tracking elusive wildife for scientific studies, and finding invasive animals like introduced snails in Hawaii.
