asian elephant ("elephas maximus"), gaur ("bos gaurus"), himalayan black bear ("ursus thibetanus"), sun bear ("helarctos malayanus"), dhole ("cuon alpinus"), sambar deer ("cervus unicolor"), indian muntjac ("muntiacus muntjak"), wild boar ("sus scrofa"), indian crested porcupine ("hystrix indica") and black giant squirrel ("ratufa bicolor") were sighted during a transect survey in january 1999. the elephant population was estimated at between two and 41 individuals in 2003, based on dung surveys conducted over three years.