The spider-tailed horned viper is one of the most remarkable examples of mimicry in the animal kingdom. Found in the rocky deserts of western Iran, this viper’s tail ends in a bulb-like tip with thin scales that perfectly resemble the body and legs of a spider. When the snake flicks its tail, the movement is almost identical to that of an insect crawling across the sand. This lifelike motion draws in birds that feed on spiders, completely unaware that they are approaching a predator. What makes