animal behaviour conflict conservation documentation elephant elephas endangered evergreen female forest habitat herbivore herd human India Indian mammal Nepal pachyderm photograph protection reserve species subspecies threatened West Bengal wild wildlife Asian Asian wild horse color coloration colored coloring coloured colouring distinctive Dzungarian horse equine equus ferus przewalskii grazer grazing herd-animal horse mane mongolian Mongolian wild horse preservation rare short-legged small stocky strong sturdy takh upright-mane wild horse subspecies animals appearance Asian-elephant-subspecies big browsers close colors colour colours communicating connected connecting elephant-hide elephants elephas-maximus-indicus enclosure Females grazers habitat-loss hair hairy heavy hide Indian-elelphants intelligent megaherbivores skin strength style texture textures tough trunks wrinkled wrinkles wrinkly zoo tusks downpour rain raining Singapore wet