Behali Wildlife Sanctuary, located in the Biswanath district of Assam is a patch of semi-evergreen forest in the foothills of Eastern Himalayas.

[6] Apart from these, there are several other small streams spanning the forest such as Behali, Bedeti, Bihmari, Borajuli, Dikal, Diring, Kochujan, Kolaguri, Naharjan, Nasbor, Sauldhowa, Sukansuti, etc.

Magnolia hogdsonii, Elaeocarpus rugosus, E. varunua, Bauhinia variegata, and Gynocardia odorata are some of the common woody species in the forest.

[6] This last left forest patch is inhabited by some of the most threatened and endemic faunal species including Rufous-necked hornbill (Aceros nipalensis)[16], Wreathed hornbill (Aceros undulatus), Binturong (Arctictis binturong), White-winged duck (Asarcornis scutulata), Indian Bison (Bos gaurus), Great hornbill (Buceros bicornis), Woolly-necked stork (Ciconia episcopus), Dhole (Cuon alpinus), Southeast Asian box turtle (Cuora amboinensis), Keeled box turtle (Cuora mouhotii), Asian Elephant (Elephas maximus), Black pond turtle (Geoclemys hamiltonii), Indian hog deer (Hyelaphus porcinus), Lesser adjutant (Leptoptilos javanicus), Smooth-coated otter (Lutrogale perspicillata), Tricarinate hill turtle (Melanochelys tricarinata), Clouded leopard (Neofelis nebulosa), Indian softshell turtle (Nilssonia gangeticus), Indian peacock softshell turtle (Nilssonia hurum), Bengal slow loris (Nycticebus bengalensis), King cobra (Ophiophagus hannah), Leopard (Panthera pardus), Pygmy hog (Porcula salvania), Burmese python (Python bivittatus), Sambar deer (Rusa unicolor), River tern (Sterna aurantia), Capped langur (Trachypithecus pileatus), Asian black bear (Ursus thibetanus), Chinese pangolin (Manis pentadactyla), Red-headed vulture (Sarcogyps calvus) and Black softshell turtle (Nilssonia nigricans).

A rampart named Rajgarh is one of the many garh (forts) which runs through the Behali RF, built by the Ahom king Swargadeo Pratap Singha.

[20] It is the major oxygen producer for the zone and it stores tons of carbon emitted by the tea and brick industries predominant in the district.

Maintaining the ground water level, providing essential commodities to several dependent population are many of the other examples known.

[6] A lot of people from all over Assam are demanding for an wildlife sanctuary by conducting a peaceful protest through community meetings, awareness camps, posters and paintings and also through social media since 1996 by a Non-Governmental Organization named Nature's Bonyapran.