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The snake's tongue is a sensory organ. each time it's flicked out - it catches microscopic scent particles from the air. Each of the two 'forks' work independently - giving the snake a direction-finding tool. If the scent on one side of the tongue is stronger - the snake knows to go towards the strongest side. The intensity of scent on the tongue also provides an indication of how close the prey is (snakes are very short-sighted !)

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13y ago

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