Sumatran Tiger: The smallest extant subspecies of tiger, the male weighs 100-150kg and the female 75-100kg, with long cheek hairs around the face, long whiskers, and a goose-yellow color all over. The Sumatran tiger has the darkest fur of all tigers. It has prominent black stripes with small intervals between them, and the stripes are often arranged in pairs, as well as on the front legs.