The healthy iguanas are very fast in their movements and will not stay inactive at one place. They will move around in their cage. Giant green iguana is very eager to know everything taking place around him. Its eyes will be round and it will go on flicking the tongue in and out as it moves around. Do not go for a quiet and docile iguana. They also get dry gangrene on their toes and tails and these parts turn gray or black and become brittle to fall off. The basic cause is poor sanitation. The inflammation, swelling and pus are formed in mouth rot. The blisters cause pus formation. The parasites: The fleas get settled in the gastrointestinal tract of blood in iguanas and these are the main cause of their death when kept in confinement. Constructing a Perfect Shelter for Iguana Iguanas love to live freely. They like to stay in large and broad natural surroundings. They prefer to have their abode on the high and dense trees. Iguanas can protect themselves from their foes and predators by hiding on the top of these trees. They are also capable to jump down and climb high for safety from the enemies without injuring themselves. Many times, the vultures will get a chance and snatch the tail apart. It can grow again without impairment. These animals have very tough skin, which can ward off scratches or cuts and it is also resistant to water. The skin pigmentation is helpful to the baby iguanas as they can hide by camouflaging particularly when they are feeling danger of marauders in some region. Different varieties of iguanas are mainly found in Canada, South as well as Central America, Galapagos Island Caribbean Islands, Fiji located in the South Pacific, Madagascar and many places off the east coast in Africa. Iguana is most well-known biggest lizard family. They also lay eggs, are cold-blooded animals and can adjust to their surroundings. When these creatures grow up, these people are unable to keep them in their small cage and try to somehow get rid of them. When iguanas are getting a proper care, they grow up quite large. 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.