So, alternatively you can put a screen door at the place of closet door. The screen door can be inset on one side and you can pull the lock during cold nights. The Plexiglas front doors will be better. There should be the vent holes provided on the wall above the door for ventilation These are a few ideas for using the closet as an enclosure for iguana's dwelling. Moreover, the reptile should be safe in the proper environment of the nests against any harm like abrasion or injuries. The box used for nest should be durable and should contain about 200 pounds of sand or soil in it. Some quality of try planter can also be put at an end to form a sort of tunnel for iguana to play. The different varieties of iguanas may have dissimilar looks, but all of them resemble in relation to their diet, habits. The different varieties of iguana are: 1. Ctenosaura- spiny-tailed iguana. 2. Dipsosaurus, - desert iguana 3. Cyclura - rhinoceros and rock iguana. 4. Lemanctus - casque-headed iguana. You should not use mud, soil, sand and bark as these will breed pest in them and cause damage to iguanas. You should clean the dwelling of iguana and sterilize it twice every week. You can place a few pieces of rocks, drift woods, broad limbs, branches etc. for climbing of iguanas. Water: Generally, iguanas quench their thirst for water by the vegetation consumed from plants and the food they take. It is hard to absorb the animal proteins and it may produce uric acid in the body which causes gouty arthritis. 2. Water: iguanas consume only a meager quantity of water. There should be sufficient amount of humidity in their cage, otherwise they may get dehydrated. This will harm them. You should give them plenty of water to drink. Male Rhinoceros Iguana are always on the guard against their predators and they will keep a watch from the top of tree or a rock while bathing in sun. This species is terrestrial type. Males are mostly aggressive to the rest of male species in their territory. They signal to each other by bobbling their heads and keep in touch.