The document discusses the Amur tiger, also known as the Siberian tiger, which inhabits southeastern parts of Russia and is the smallest subspecies of tiger. It describes the Amur tiger's fur and coloration, noting its thicker fur and lighter, reddish-rust or rusty-yellow color with narrow black stripes. The passage also states that the Amur tiger is the largest of all tigers and the only one adapted to living in snow, hunting alone as a true loner. It concludes by mentioning the Amur tiger has been a priority for the WWF-Russia project since 1994 as an endangered species.