The major tree species includes Terminalia myriocarpa, Ailanthus excels, Duabanga grandiflora, Canarium resiniferum, Trewia nudiflora, Tetrameles nudiflora, Sterculia villosa, Macropanax dapermus, Syzigium macrocarpum, Garcinia spp., Quercus lamellosa, Castonopsis indica, Phoebe goalparensis, Amoora wallichii, Ailanthus grandis, Pterospermum acerifolium, Dillenia indica, Artocarpus chaplasha, Bischofia javanica, Albizia procera, Bombax ceiba, Dendrocalamus hamiltonii, Bambusa pallida and Pseudostachym polymorphism, Calamus erectus, Calamus tenuis and Calamus flagella.
Major fauna in the Tiger Reserve includes Panthera tigirs, Panthera pardus, Neofelis nebulosa, Felis chaus, Cuon alpinus, Canis aureus, Ursus thibetanus, Arcticits biturong, Elephas maximus, Bos gaurus, Rusa unicolor, Axis porcinus, Muntiacus muntjac, Sus scrofa, Martes flavigula, Ratufa bicolor, Pteromyini, Trachypithecus pileatus, Macaca mulatta, Macaca assamensis, Macaca arctoides, Buceros bicornis, Rhyticeros undulatus, Anthracoceros albirostris, Aceros nipalensis, etc