How to Identify Vogel's Pit Viper (Identification Guide)

Key identifying features

Vogel's pit viper (Viridovipera vogeli) is a slender, arboreal green pit viper identified by its bright green body, a pale (often white or yellowish) stripe along the lower side, and a reddish-brown tail tip that contrasts with the rest of the body.

Coloration & pattern

The body is a uniform bright to bluish-green, sometimes with fine dark flecking, and a distinct pale stripe runs along the lower flank on at least one side (often more pronounced in males). The tail is a contrasting reddish-brown or rust color, a helpful field mark shared with several related green pit vipers. The belly is pale green, yellowish, or white.

Head, eyes & scales

The head is triangular, clearly wider than the neck, with heat-sensing pits between eye and nostril. The eyes are often golden or coppery with vertical pupils. Scales are keeled, giving a slightly rough texture, and the head scales are small and granular rather than large plates.

Size & body shape

This is a moderate-sized, slender pit viper, typically 60 to 80 cm (about 24 to 31 inches) long, with a laterally compressed body adapted for climbing and a prehensile-like grip aided by a moderately long, muscular tail.

Range & habitat where you'll see it

Vogel's pit viper is found in parts of mainland Southeast Asia, including Thailand, Laos, and Vietnam, inhabiting forests and shrubby vegetation where it perches on low branches and foliage.

How to tell it apart from look-alikes

Separating Vogel's pit viper from other green pit vipers (such as the white-lipped or Gumprecht's) relies on subtle differences in scale counts, the exact color of the tail, and the presence or thickness of the lateral stripe, along with its specific geographic range in mainland Southeast Asia. Field identification to species level is often difficult without close examination.