cobras

How, or Why, Cobras Evolved Tissue-Destroying Venom

Puff adders are ambush foraging snakes and therefore have squat bodies and broad heads for handling their infrequent, large meals. Snakes with this body form tend to be slow moving, and can thus not rely on speed to escape from predators. Credit: Graham Alexander

Not on the Nose: How Puff Adders Dodge Their Predators