Cyclura - rhinoceros and rock iguana. 4. Lemanctus - casque-headed iguana. 5. Corytophanes- helmeted iguana. 6. Chalarodon- Madagascar iguana. Iguanas are Herbivores: Herbivores are the form of creatures that eat plant and vegetation. There are many reptiles, which cannot live exclusively on plants and they eat meat of insects or other animals. 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. An iguana is a reptile and it resembles a lizard. You should know about its primary features. Iguana is a family of lizards called iguanidade. You should monitor the temperature in their cage with a thermometer. There should be a warm place to bask with a temperature around 110 degrees Fahrenheit. You can use a spotlight for this purpose. Heat tape, under tank heaters and ceramic lights are some of the other alternatives. The Food: The food given to iguana should be healthy and nutritious. The crest on the back of males is heavier than female iguanas. They have a wide mouth and sharp teeth, short nostrils and exterior ear drums. Iguanas have a third eye also at top of head, which watches the movements over the head. Red Sided Skink iguanas also have a third eye. This variety of iguana is mostly found in rocky plains of Eastern and Southern Africa. During the cold weather, you should especially be careful to control the temperature in their cage; otherwise they may be frozen to death. 3. Food: Baby iguana should be fed a proper diet. You should better follow a diet plan for them. They require food rich in Vitamin D3 with sufficient quantity of phosphorous and calcium. You Can Have a Special Pet: Giant Green Iguana Several people are keeping Giant iguana as their pet in place of dogs and cats these day. It is called "giant" for its size when it becomes adult. You may wonder about the size of this reptile when it grows up, all the accessories which you buy for your cute pet may become un-usable for their size after some time.