As the iguana grows, you should be able to make changes in the size of its cage rather than shifting it from one cage to another. It is advisable to go for a bigger cage from the beginning. That will provide more freedom to iguana for moving around. Food: Now coming to the food to be given to your pet iguana, naturally it should be given a healthy food. The marine iguanas is the most arduous to be kept in confinement. They essentially feed on marine algae that are almost imposible to create commercially. Genus Conolophus, have closest resemblance with the marine iguana. This iguana is also known as Galapagos Land Iguana and basically eats plants and cactus. Many people get attracted by these cute creatures and get involved with them to keep them as pets. It is a fact that these tiny animals can turn very large very soon and may also become aggressive. However, they are generally good pets and you have to take their proper care for food and living. If you want to keep them as pets, it is better you acquire some basic knowledge about the nature of iguanas, the way they live, their habits, food, behavior and what are the necessities for their existence. Moreover, the morning atmosphere provides perfect temperature for digestion of food. You can feed them all through the day also, but take care to feed in small quantities. Take specific care not to feed iguanas heavily before they sleep. The size and growth of iguanas depends on the quantity of food fed to them. They need constant warmth for their body as they are cold blooded creature. 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. The water should be clean and the containers should be daily cleaned to avoid any bacteria. Bringing up/preparing your Iguana Your pet iguana should be properly brought up and trained. It is good to teach it to take a bath. This way, it can take some water and also clean itself. You should provide lukewarm water for iguanas to take a bath.