Moreover, their femoral pores are also smaller. Male iguanas erect their spine at back while in courtship and bobble the head. They are more aggressive while in courtship. At the same time they are timid also and will run away out of fear. Female iguanas lay the eggs by digging tunnels. They do not hatch their eggs. It should be round and its skin should be free from scars, scratches lumps or bumps. The healthy iguanas are very fast in their movements and will not stay inactive at one place. They will move around in their cage. Giant green iguana is very eager to know everything taking place around him. Its eyes will be round and it will go on flicking the tongue in and out as it moves around. Genus Dipsosaurus iguana is the dessert iguana from Southern America and Mexico. It is full-bodied and has a raised top. It has prolonged scales on the back. Their bellies are white in color and tails have white spots and have stripes. They are normally about 15 inch in size when grown up. They have long tails almost double the length of their bodies. You will have to install lamps or heaters to keep them warm in cold areas. Pet and Tamed iguana. You cannot tame your pet iguana so easily. You have to take their proper care and interact with them so that they feel comfortable and get acquainted with you and your family members. A tamed pet iguana will soon move freely in your house and will not eat anything by just getting excited. They can spend only a short time in cold water of sea when they dive in search of their algae food. They normally swim in the places in islands where the water is not deep. After swimming, they normally bask in the sun to warm up their bodies. In cold days they almost become immobile and easily fall prey to the marauders. The different varieties of iguana comprise those with curly tails, whip like tails, anoles and swifts. There are different types of iguana depending on their habitat: terrestrial, arboreal and semi-aquatic. Because of their skill, they have easy adaptability to the environment they live in. For instance, the marine iguana can easily swim and green iguana can climb the high treetops.