Stock photography, photos: Sumartran Tiger Stock photos of A mature female Sumartran Tiger relaxes Photograph: © David F Hancock Click for a larger image and more information Keywords associated with this stock photo: relaxed, relax, relaxation, tiger, sumatra, indonesia, agression, poise, poised, watchful, alert, cat, canine, wild, stripes, natural, wildlife, zoo, taronga, australia, Panthera, tigris, Sumatran, Ti