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The Green vine snake (Ahaetulla nasuta)

The green vine snake (Ahaetulla nasuta) looks so ridiculously wicked and serpentine that it almost doesn’t look like an actual l snake but instead resembles an animated snake from a lurid 80’s cartoon.  Ahaetulla nasuta is mildly toxic and feeds on lizards and tree frogs which it catches by means of stealth and camouflage.  Native to most of southern India, the snakes are diurnal and arboreal.  Their great specialization is imitating tangled green vines, a feat which they pull off so successfully that most people never notice them, however, when startled they are capable of changing their color from bright green (which blends with the jungle) to a checkered black and white warning pattern.  In duress they also gape open wicked smiles to threaten off potential predators.  The snakes are viviparous and have astonished zookeepers by giving birth after being alone for years. It remains a matter of herpetological dispute as to whether the female snake is able to delay fertilization within her body for extremely long periods of time or whether she is capable of parthenogenesis (a rare but not unheard of trait among snakes).

The Green vine snake (Ahaetulla nasuta) displaying a threat posture. Photo bySandilya Theuerkauf

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