Sticking out his forked tongue and using it to probe objects that come across the snake’s path

Having stuck out its forked tongue and using it to probe objects that come across the snake's path or simply waving it in the air (you've all probably seen on TV how a snake quickly sticks out and thrusts its tongue into its mouth ), the snake inserts the tips of its tongue into the pits, and particles adhering to the tongue are perceived...

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