The European viper uses cloak-and-dazzle to escape predators

Source: Science Daily

Research demonstrates that the characteristic zig-zag pattern on a viper’s back performs opposing functions during a predation event. At first, the zig-zag pattern helps the snake remain undetected. But upon exposure, it provides a conspicuous warning of the snake’s dangerous defense. Most importantly the zig-zag can also produce an illusionary effect that may hide the snake’s movement as it flees.

https://www.sciencedaily.com/releases/2020/05/200521151917.htm