To smell.
No, snakes do not have eyes on their tail. Snakes see by flicking their tongue "to taste the air".
Dogs keep flicking their tongue because they are trying to get rid of the peanut butter stuck to the roof of their mouth. Peanut butter is a very sticky substance and can easily get stuck on the roof of a dog's (and human's) mouth,
Yes. They also use it to see and touch. It can pick up scents from the air this way and those on the floor by flicking its tongue.
This is called a flicking of the tongue. A snake smells with its tongue, so it will flick its tongue a lot. it uses its tongue for sensing its prey and when it gets close enough it leaps and bits.
A snake has a forked tongue because it evolved as a 'direction finding' sense over thousands of years. As a snake flicks its tongue, microscopic particles of scent stick to it. The tongue is pulled back into the mouth, and placed into the Jacobson's Organ - an area of very sensitive nerve cells. So sensitive that it can detect the microscopic variations from one half of the forked tongue to the other - telling the snake to 'go this way' to food !
By flicking their tongue?
This is very sexual
No, snakes do not see through their eyelids. When snakes close their eyes or "blink," they are not able to see. They rely on their other senses, such as heat-sensing pits and tongue-flicking for sensing their environment when their eyes are closed.
There are three orders of blind snakes, and many more with very feeble sight. That's what the pit in pit vipers is meant to compensate for, and the tongue flicking is a major information-gathering tool for almost all snakes.
They use their tongues, with which they pick up particles and leave them to a special organ called vomeronasal organ.
It's a 'sensory organ'. It basically takes the form of two 'pockets' in the roof of the snakes mouth. When the snake flicks out its tongue, microscopic scent particles stick to it. Withdrawing the tongue back into its mouth, the tips are inserted into the Jacobson's organ, and the snake's brain decodes the information.
Snakes don't necessarily have a preference for specific colors of rats. However, some snakes may be more attracted to movement or size when it comes to selecting their prey. It is more important to provide a varied diet to ensure proper nutrition for the snake.