![Iguana](https://assets.shortpedia.com/uploads/2022/11/29/1669716117.webp?tr=w-1200,h-600,cm-pad_resize,bg-F3F3F3)
Iguanas have a sensory organ called Jacobson's organ that allows them to detect smell, taste, and chemical signals. Iguanas learn about their environment and other lizards/people in this manner. When your iguana licks you, it's trying to figure out who you are.