How is a green iguana different from other iguana types?

Well, for some iguanas, like those in the genus Ctenosaur (if I spelled that right lol) their diet is much the same with some locality differences (like the Mexican Spiny Tailed iguanas diet vs. the green iguanas diet). Green iguanas also share (in males) the head-bobbing dominance technique with all other iguana species.