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Assuming you mean 'why do snakes flick out their tongue'...
It's basically a sensory organ. The snake is 'tasting' the air. Each side of the the fork is independent from the other. When the snake flicks out its tongue, it collects microscopic scent particles from the air. Withdrawing the tongue into its mouth, there is a sensitive group of nerves in a 'pocket' where the snake inserts the tips. This translates the scent into messages for the snakes brain.
The minuscule difference in strength of the scent on either side of the tongue enables the snake to follow the stronger scent to locate its prey.
What else can I help you with?
Why do snakes keep flicking their tongue?
To smell.
Where is the forked tongue on extreme challenger you spy book?
One forked tongue is one of the snakes by the dinosaur and the other is one of the blue monsters snakes tongue.
What is the tongue length of a rattlesnake?
As with other snakes, the tongue is about as long as its' head.
Which Organ do Snakes hear with?
tongue
Do snakes have eyes on their tails?
No, snakes do not have eyes on their tail. Snakes see by flicking their tongue "to taste the air".
Why do snakes have a pointy tongue?
Because they feel like having a long tongue.
What shape is a snakes tongue?
V shaped
How do snakes sense movement?
through there tongue
Do boa snakes have good hearing?
All snakes can't hear but they have a good sense with their tongue.
Does snakes see with there eyes?
yes! and they smell with their tongue
Does snake bite with his teeth and or tongue?
While a snake's forked tongue looks dangerous, it really is not. Snakes actually smell with their tongues. If snakes bite, they use their teeth
Which snake has its tongue longer than its body?
None ! A snakes tongue is rarely longer than its head !
