Why does the snake’s tongue bifurcate?

Most snakes have poor eyesight and can only see blurred images of objects, so they need to rely on smell and taste to track prey and avoid enemies. The snake’s sense of smell and taste are on the tongue. When the tongue is stretched out, the odor particles in the air can be collected. After retracting into the mouth, the odor particles will be transmitted to the vomeronasal device, so the snake can know the information of prey or enemy, so the snake keeps huffing and puffing the tongue. Tongue bifurcation is the need to detect distance. It’s like our eyes. It’s not easy to accurately estimate the distance just by looking with one eye. Therefore, the snake’s tongue has to split two forks to find out the accurate information of prey or enemy.

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