Iguanas communicate with each other

Iguanas use their bodies to communicate. Their motions (stylized walking, strutting, bobbing), utilization of three-dimensional space (where they are in vertical space, seeking height or flattening out), and organization of their body and body parts all contribute to the formation of their words. They may readily converse with other iguanas using this body language. Iguanas have nonverbal communication skills. Iguanas bob their heads instead of creating sounds. Additionally, they move the dewlap, a skin flap located under their necks. Iguanas frequently bobble their heads slowly up and down to acknowledge and greet one another. An increased rate of head bobbing often indicates anger and hostility. They can be displaying their territory.

The iguana is actively trying to intimidate something or someone when the flared dewlap is paired with the towering stance, laterally compressed body, and erect nuchal and dorsal crest. Iguanas should not be approached if they are showing signs of aggression, such as aggressive head bobbing or tail whipping. When dewlaps are relaxed, they flop down and sway when the iguana moves, their dewlap can be extended as a welcome. Males that are wooing ladies will also flap their dewlap. Iguanas often don't produce noises, but they do communicate through body language.