How do snakes smell

A quick overview of how snakes use their tongue to detect the scent of their prey. The forked tongue captures molecules from the air and passes them though small passages in the roof of their mouths to the Jacobson's organ (also called vomeronasal organ).

This is an organ of chemoreception (respond to chemical stimuli such as taste and smell) that is part of the olfactory system of amphibians, reptiles, and mammals. It is a patch of sensory cells within the main nasal chamber that detects heavy moisture-borne odour particles.

Scientists used to think that the two tines (forks) of the tongue were separately inserted into the two holes through the roof of their mouth. This is now known to be incorrect, but the precise method of separating the direction of scent has not been identified.

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