Snake has a very developed sense of smell and can distinguish many kinds of odors, but its olfactory organ is not the nose, but the slender, long, bifurcated tongue, the air The fine odor particles in the medium are stuck on the tongue, and then it retracts the tongue to the vicinity of the throat, which is the smell analysis room of the snake, and even the faintest odor cannot escape the check.

Golden Python

A snake's tongue is its sense of smell organ. When the snake sticks its tongue out, it gets some substance particles. After retracting it, the tongue sticks out into a pair of small cavities in the front and upper part of the mouth. This part is called a nasal aid. It does not communicate with the outside world and cannot directly produce a sense of smell. But it can achieve its sense of smell with the help of the snake's tongue. The nasal aid is composed of many sensory cells, which can identify the chemical substances in the particles by synthesizing and analyzing the information of chemical substances through the olfactory center. After judgment, the snake can accurately capture its prey. When an animal bitten by a snake escapes, the snake can use its retractable tongue and sensitive nasal aids to control seeking and tracking until it finds the captured object again.