The main food of desert iguana is flowers and leaves of many bushes. In order to control its body temperature, it will change its color from gray to clear white. It will have a darkest color in the morning when it is cold and gradually it turns its color to whitish in the afternoon to avoid feeling very hot. Iguana as pets: Many people in America are keeping iguanas as their pets. They think that they can save them from being extinct this way. You may be aware that iguanas are herbivores and they mostly eat flowers, buds, tender leaves and fruits. In addition, they also feed on some worms like: rare juicy mealworm, cricket, and wax worm. If you are interested in keeping pet iguanas, you should know all the important fundamental principles for bringing them up. The Selection of Iguana: When you buy infant iguanas to make your pet, you should buy the healthy reptiles, which are energetic and lively. The healthy iguana is round in shape and its eyes are also round and shining. 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. The others iguanas also develop the skills required to live in deserts and dry places. Marine iguanas maintain their number and sizes according to the availability of food. When algae had decreased at the time of onset of El Ni o, the marine iguanas also decreased in their length. When the food was available again they regained their sizes to normal. The marine iguanas are not as active as the other species of iguanas. They like to bask in sun during the day break to get warmth to keep their body at a higher temperature. So you should be able to care of these primary needs when you plan to construct a shelter for them. You can consider some of possibilities for iguana enclosures as discussed below: One of the options is to make a shelter for iguana in a closet.