Where is the sense of smell located in the snake?

The sense of smell in snakes is located in the vomeronasal organ, also known as Jacobson's organ. This organ is located on the roof of the snake's mouth and is used to detect pheromones, which are chemical signals used by snakes to communicate with each other and to locate prey. When a snake flicks its tongue, it picks up scent particles from the environment, and these particles are then brought into the vomeronasal organ where they are analyzed. This sense of smell is critical for snakes, as they rely on it heavily to hunt and navigate their environment.