You sometimes feel a sense of oddness in a forest—maybe a sensation of something on your skin, or a pair of disembodied eyes watching. After almost three decades as a researcher and conservation biologist, Krishnamani Ramanathan is now at home in an environment that he first found eerie. Once, resting after following a troupe of primates in Someshwara Wildlife Sanctuary, Karnataka, he felt something on his leg. He was in shorts and chappals. He thought it was a trickle of water. When h