Can You Identify Venomous Snakes by Color Alone?

Color Patterns Are Deceptive

Color patterns and hues can be misleading when trying to identify venomous snakes. For example, the Eastern Coral Snake (Micrurus fulvius) has a distinctive pattern of red, yellow, and black bands, but the Scarlet Kingsnake (Lampropeltis elapsoides) has a similar pattern, making it impossible to tell them apart by color alone. Even among venomous species, color variations can occur, such as the Mojave Rattlesnake (Crotalus scutulatus), which can range from dark brown to light gray.

Look for Distinctive Features

To accurately identify a snake, it’s essential to look beyond color patterns and examine other distinctive features, such as the shape of the head, the size and shape of the eyes, the texture and pattern of the scales, and the shape and size of the body. For example, venomous snakes such as the Cottonmouth (Agkistrodon piscivorus) have a triangular head and vertical pupils, while non-venomous snakes such as the Garter Snake (Thamnophis sirtalis) have a more rounded head and horizontal pupils. The length of the tail also provides a useful clue, with venomous snakes such as the Copperhead (Agkistrodon contortrix) typically having a shorter tail than non-venomous snakes.

Use a Combination of Characteristics

The most reliable way to identify a snake is to use a combination of characteristics, including color patterns, distinctive features, and behavior. For example, the Western Diamondback Rattlesnake (Crotalus atrox) has a distinctive rattle and will vibrate its tail when threatened, while the non-venomous Bullsnake (Pituophis catenifer) will also vibrate its tail but will not have a rattle. By considering multiple characteristics, you can increase the accuracy of your identification and avoid mistakenly identifying a venomous snake as harmless.