Generally, they exist in abundance in the deserts and rainforest regions. They have a variety of species. The iguanas mostly live on the nature and can adjust easily with their surroundings. Some species are living in deserts while others live in rainforest. Even a few species have their dwelling in sea. The Rhinoceros Iguanas have mostly grayish brown color. The male in this species grows up to 56 cms in length and weighs about 10 Kg. Rhinoceros Iguana has a raspy skin with dermal scales on it. There are also large scales on his head. Some of the species of Rhinoceros Iguana have horns also. These can be comprehended as simple grown up scales. Making the closet a safe and clean shelter for you iguana is a real perplexing task. You should not provide a very big space also as iguana may hide somewhere away from heat. You can use the lower two feet storage place. Some iguana will usually try to hide in the bottom portion. They may fall sick and get hypothermia. The different varieties of iguanas may have dissimilar looks, but all of them resemble in relation to their diet, habits. The different varieties of iguana are: 1. Ctenosaura- spiny-tailed iguana. 2. Dipsosaurus, - desert iguana 3. Cyclura - rhinoceros and rock iguana. 4. Lemanctus - casque-headed iguana. You can easily find the difference between a healthy and un-healthy iguana. The iguanas are very energetic, vigilant and quick. The unhealthy iguana is not fast and may just stay where it is. Just examine the body and all parts of iguana you want to select. It should be round and its skin should be free from scars, scratches lumps or bumps. When these reptile perceive any danger, they use their defense tools comprising their strong tail, claws, jaws and nails to protect themselves. When they are in their natural dwelling, the iguana cantinas will be careful and shield themselves from the marauders. They are very active and possess a keen sense of hearing, sight and smell.