Conservationists are getting very excited by a photograph of a rhino's butt.
They have reason to, There are no more than 200 Sumatran rhinos left, scattered in pockets around Southeast Asia. On Borneo, there are perhaps 30. So the camera-trap photo of a pregnant female has everyone a bit more hopeful. The smallest, hairest, and most primitive-looking of rhinos, the Sumatrans are the world's most endangered large mammal.