As iguanas like to climb up the branches of trees, you can place some branches, twigs, barks, rocks and broad limbs and similar material for them. Correct Food: Iguanas are herbivores and mostly feed on leaves, vegetables and fruits. Their diet should be balanced and major part of it should comprise leafy vegetables like mustard greens, kale, escarole, spinach, etc. There is a green breed of iguanas, that is commonly seen in Paraguay, Brazil, Mexico and Caribbean Islands. Green iguana is the favorite of hunters, but it is not yet considered as imperiled breed of animals anywhere as is sometimes misunderstood like that. Hunters prefer to catch the large female iguanas. 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. You should be aware beforehand that they will need a large space and bigger containers after sometime. 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. Organ failure: The natural aging process results the failure of organs. In some cases, there is bacterial infection that causes the failure. The predominant signs are loss of weight and appetite, bloating and even death. Bladder stones: There abdomen gets swelled due to formation of stone in bladder. It has a firm body, which has a strong crest of its spine and is completely sturdy. It possesses long legs and walks tall on the ground. The Rhinoceros Iguanas have mostly grayish brown color. The male in this species grows up to 56 cms in length and weighs about 10 Kg. Rhinoceros Iguana has a raspy skin with dermal scales on it.