There seems to be sexual dimorphism in this rather heavy-bodied species with males being the larger sex, or at least attaining maximum growth earlier in life than females. Males also tend to be more brightly colored and strongly patterned than the females. Many females are 4_ to 5_ feet long. Males commonly exceed 6 feet in length and may near, or attain, 8 feet. False Water Cobra Snake is a medium to large sized snake with large eyes with circular pupils providing it with good daytime vision. The tongue is black. It is olive green or brown in coloration, with dark spots and bands covering much of its body. The background coloring and banding generally becomes darker towards the tail. This coloring gives the snake effective camouflage in its rainforest habitat. The ventral scales are yellow or brown, spotted with dark flecks that create three dotted lines which appear to merge towards the tail.