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A Sumatran tiger (Panthera tigris sumatrae) peers at a camera trap it triggered while hunting in the early morning in the forests of northern Sumatra, Indonesia. Trying to photograph the critically endangered Sumatran tiger is difficult: not only do few remain, but those that do mostly live in rugged mountains. Information on where to set the camera came from a former tiger hunter who is now employed as a park ranger. Sumatran tigers may very well be the next tiger subspecies to go extinct.