Snails Made a Snake Become a 'Right-Handed' with an Asymmetrical Jaw 0 8

This feature is the result of evolutionary adaptation to feeding on snails. Notably, the overwhelming majority of these mollusks coil their shells clockwise — to the right. The specialized structure of the jaws allows the snake to extract the 'right-handed' snail from its shell much more efficiently, making fewer movements.

At the same time, snails with the opposite, 'left-handed' coiling gain a protective advantage and more often avoid predation. This example vividly demonstrates the classic evolutionary 'arms race' in nature.