Snakes & Lizards Testing the Air

 Snakes and lizards constantly flick their tongues out of their mouths. Have you ever wondered why? They actually taste the air for particles of chemicals that are present all around us. These particles are then transferred to a special organ that these reptiles have on the roof of their mouths called the Jacobson’s organ. This organ helps the reptile to partly smell and partly taste the particles, so as to detect prey, a mate or an enemy.