D. biloreatus can be found in parts of Northeast India (Darjeeling, Assam, and Arunachal Pradesh), northern Myanmar, and Western China (Tibet); it is also reported from Vietnam.

[1][4][a] The preferred natural habitats of D. biloreatus are forest and shrubland, but it has also been found in agricultural areas.

[1] D. biloreatus is highly variable, typically non-venomous (some have enlarged rear fangs and toxic saliva) with large, regular scales on the head.

[4] Dendrelaphis biloreatus was originally described by Wall in 1908 as a species new to science.

The junior synonym Dendrelaphis gorei was named in honor of British army officer St. George Corbet Gore.