That means they are cold-blooded animals, and they are highly dependent on their immediate environment to function correctly. In the wild, an iguana will bask for two to three hours in the sun to excrete the waste generated from yesterday's meals.
Without a consistent heat source, an iguana won't eat, digest, and excrete waste. Wild iguanas are known for spending most of their days on the branches of trees. They rarely venture down to the ground if they don't have to because they are arboreal or tree-dwelling reptiles.
When hungry, iguanas can find as many as fifty different plants to feed on. They get all the nutrients they will ever need because if one plant lacks one particular nutrient (such as calcium), the reptile will move on to the next available plant. Tropical rainforests are incredibly abundant in plant matter; it's no wonder that iguanas of all shapes and sizes can be found in abundance in tropical territories.
If you want to build an adequate enclosure or habitat for your iguana, there are a couple of things that you must consider:
1. Adult iguanas grow up to six feet in length. When you take care of your iguana well, it will grow up to at least four feet in length. Your iguana habitat has to be at least twice as long as your iguana. It's alright to start with a small aquarium initially, but you will have to transfer your iguana to a larger enclosure over time. Otherwise, your reptile will end up suffering in a tiny prison where it can't move around much. There is also the risk of the iguana escaping the enclosure because it has become very cramped.
2. A mesh enclosure is excellent when you live in a warm part of the country. If you live where temperatures are frigid (below 79 degrees Fahrenheit on most days), you have to invest in a large glass terrarium, because glass can keep the heat. Then, you need to install heating lamps to warm the reptile's body enough so it will be able to function well. Then, UVB lamps to supply the reptile with ultraviolet rays and heat. UV rays are needed for calcium-related metabolism.
3. Iguanas are tree-dwelling reptiles and need climbing structures in the terrarium. Broad and robust enough to support your iguana. If you purchased an adult iguana around four to five feet in length, the reptile probably weighs close to five kilos.