A decade ago, India had all but declared victory over poaching in Kaziranga, a 430-square-kilometre (166-square-mile) protected area of forest in the northeastern state of Assam that is home to around 2,500 rhinos. But recent years have seen an alarming upsurge in the slaughter of the animals.
But like other rhinos these animals are under threat with only around 3500 left in the wild, all in India and neighbouring Nepal. Their horns are prized in China and Vietnam where some believe they have aphrodisiac and cancer-curing properties. This demand fuels poaching and at least a dozen rhinos have been killed here this year.