Southern black racer (scientific name: "Coluber constrictor"), the racer is more likely to suffocate or crush its victim into the ground, rather than coiling around it in typical constrictor fashion. Man remains the greatest enemy of black racers. Many are killed on highways and others are intentionally killed out of fear. The white chin causes some people to kill this snake, believing that it is a cottonmouth – a venomous snake more commonly called a water moccasin. The venomous snake has a white lining inside of its mouth. Racers are nonvenomous and do not breed with cottonmouths. Natural enemies include such birds of
Chinese water snake . The Chinese water snake typically feeds on fish and amphibians. "Myrrophis chinensis" are harvested for food and skins, but this is not considered to be threatening its populations. "Myrrophis chinensis" is used in folk medicine. It is commonly used in the production of Chinese snake oil. It is known for treating ailments such as fever, joint pain, and headache. Chinese water snake The Chinese water snake, Chinese smooth water snake, Chinese mud snake or Chinese rice paddy snake ("Enhydris chinensis" or "Myrrophis chinensis") is a species of mildly venomous, rear-fanged snake, endemic to Asia. "M. chinensis" is found in