Fangtastic Facts
Photography: © Tino Anttila/Shutterstock
Chinese Cobra
(Naja atra)
The Chinese cobra (Naja atra) is the most commonly encountered venomous snake in Vietnam. What makes this species particularly fascinating is the scientific story hidden within its biology, where several of its venom components have revealed unexpected medical and biochemical insights. It has been the focus of extensive toxinological research, and its venom has long been used in traditional Chinese medicine. Read on to learn more.
Description
The Chinese cobra is a heavily built snake, unlike other members of the Naja genus, which tend to be more slender.
The Chinese cobra is generally light grey‑tan to dark grey‑black above, sometimes with white, yellow, or brown tones and irregular pale crosslines. The hood may show a spectacle‑like or partial marking, which may be incomplete or absent. The head sides are paler than the dorsum. The ventral head and neck are white to light grey or light orange, often with a pair of dark spots and a dark transverse band on the hood’s underside. The ventral body and tail range from white or grey to dark grey mottled with white, or blackish, with regional variation in Taiwan populations (eastern snakes entirely blackish; central/southern mostly white‑grey; northern mixed).
This species grows to a maximum length of 1.5 metres.
Important: Colour, markings and overall appearance can vary considerably between individual snakes. Photographs, descriptions and information on this website should not be relied upon to identify a potentially venomous snake. If you encounter a snake, keep your distance and leave identification and removal to trained professionals.
Chinese cobra (Naja atra) displaying its hood. Photography: © Tino Anttila/Shutterstock
Distribution
Naja atra is native to China and Vietnam.
Habitat
Chinese cobras inhabit mountains, plains and farmland, sometimes near local homes, where food sources may be more available.
Diet
Prey selection in Naja atra is highly diverse, with individuals consuming a wide range of vertebrates and aquatic species, including rodents, frogs, toads, snakes, fish, birds, lizards, loaches, bird eggs and eels. This daytime hunter is an opportunistic feeder, taking whatever prey is most readily available.
Behaviour
Like other cobras, it is known to rear up and slightly sway from side to side when threatened. It also spreads the ribs in its neck to inflate its hood, making it look larger, and hisses in an attempt to warn off the threat. It is not an aggressive species, but it will defend itself if it is alarmed. It prefers to escape rather than face confrontation.
Reproduction
Chinese cobra eggs are unique because female size directly influences both egg size and clutch size. Larger females typically produce larger clutches, with correspondingly larger eggs. From June to August, gravid females lay between 5 and 28 leathery, flexible eggs, which they actively guard. The eggs incubate for approximately 60–80 days before hatching.
Leathery eggs of a chinese cobra (Naja atra). Photography: © Vladislav T Jirousek/Shutterstock
Venom
A bite from this species’ short fangs may be difficult to detect visually. Although its venom contains neurotoxins, the most significant clinical effects come from cytotoxic cardiotoxins that cause intense pain, swelling, blistering, and progressive necrosis. Effective antivenom is available in Taiwan and China. Interestingly, purified components of Chinese cobra venom have shown anti‑inflammatory and immune‑modulating properties in animal studies, underscoring the species’ relevance to biomedical research.
Conservation status
This species is listed as vulnerable, mainly because of habitat loss and hunting. In some parts of China, people collect Chinese cobras and sell them to Hong Kong, where they have traditionally been used as food. In recent years, captive breeding and snake‑farming programs have helped reduce pressure on wild populations.
Fangtastic Fact
Scientists have discovered cytotoxins in Chinese cobra venom that can trigger programmed cell death in cancer cells. Laboratory studies have shown that individual venom proteins can activate pathways involving mitochondria, caspases and other cellular signalling systems, causing cancer cells to undergo apoptosis or other forms of regulated cell death. Researchers are investigating these molecules as potential starting points for future anticancer therapies.
Disclaimer
Quick Links
Content on this website is provided for general educational purposes and is not suitable for identifying snakes or guiding interactions with them. While reasonable care is taken to ensure accuracy, no guarantee is made regarding completeness or suitability for specific circumstances. Wild snakes should not be approached or handled, and professional snake catchers should be contacted if assistance is required. By using this website, users acknowledge and accept these terms.
All images on this site are copyright to their respective owners. Images without attribution are owned by Fangtastic Facts.