The advantage with these reptiles is that they can be brought up in any climate and can easily grow between four and six feet length and will weigh between ten and fifteen pounds when grown up. The pet iguanas can live up to 15 to 20 years as pet. However, it will depend on how they are fed and taken care. Their diet should be balanced and major part of it should comprise leafy vegetables like mustard greens, kale, escarole, spinach, etc. They should also be fed with some amount of food rich in proteins. In addition, they can be fed green peppers, frozen mixed vegetable, squash, green beans and fruits such as apple, banana and mangoes. You can also spread the newspapers on floor for warmth, if you have a tight budget. Normally, iguanas live on the tree branches. If you can set a few branches in their shelter, they will feel homely and climb them. The branches should be steady and should not give way due to the weight of your pets or if they lay down on the branches. Marine iguanas are classified as poikilothermic creatures. 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. It is better if you remain with it initially, until it becomes acquainted to the place and starts feeling homely in that environment. 5. When you install heaters or fans in the compartment, take care about the wires. These should be fixed cautiously and should be out of reach of iguanas. Iguanas are invasive animals and may jump over the wires and equipment, if those are accessible to them. You have to train your pets to drink water. Put some treat for them in the water so that they drink water with this food. They will soon get habitual to drink water. 3. Vitamins and minerals: Iguana requires a lot of Vitamin D3, calcium and phosphorous for growth of its bones and body. You should select the food containing these minerals and maintain the ratio of these elements 2:1.