A year-round routine for a large climbing iguana
A green iguana is a large, arboreal lizard that grows into a tall enclosure, so preventive checks must cover height and climbing as well as heat and food. Start each week by watching how the iguana moves: confident climbing, a firm grip, a tail held off the ground, and a keen interest in greens all signal a good baseline. Compare that baseline over time, because iguanas often hide early trouble behind still behaviour. A routine that checks the enclosure, the animal, and the feeding pattern together will catch small problems before they become obvious ones.
Heat, ultraviolet light, and humidity in a tall enclosure
Measure heat at the basking branch and again lower down, so the iguana can choose between warmth and a cooler perch. Check that the ultraviolet lamp is positioned over the basking area, unobstructed by glass or thick mesh, and replaced on schedule before its output fades. Humidity matters for a green iguana, so check the gauge, mist on a regular pattern, and look for damp bedding that never dries, which can irritate skin. Dry air, by contrast, often shows first as dull skin or a difficult shed, so treat the humidity reading as a health check in its own right.
Diet, shedding, and the weekly body check
Feed a green iguana mainly dark leafy greens and suitable vegetables, with fruit only as a small addition, and dust foods with a plain calcium supplement on the schedule your reptile veterinarian recommends. During the weekly body check, look at the jaw for even shape, the toes for retained shed, the tail for injuries or kinks, and the skin for patches that have not shed cleanly. Soaking or gentle misting can help a shed along, but never pull shed skin free. Record shedding problems, appetite changes, and any swelling around the jaw or limbs, because those notes turn a vague worry into a useful history.
Enclosure size is itself a preventive check for a green iguana, because a lizard that has outgrown its space cannot exercise, shed, or thermoregulate properly. Measure the iguana from nose to tail tip a few times a year and compare that length with the enclosure's height and depth, planning an upgrade before the animal is cramped rather than after. Check branch diameters too, since a growing iguana needs thicker perches that support its weight without flexing. Record each measurement with a date, and photograph the enclosure after any rebuild so the next keeper or sitter can see exactly how the setup should look.
Weight, behaviour, and when to seek veterinary advice
Weigh a green iguana monthly on a scale that suits its size, and record the figure beside notes on appetite and activity. A gradual loss, a tail that grows thinner, or a lizard that stops basking and stays low in the enclosure all deserve veterinary attention. Contact a reptile veterinarian promptly if the iguana stops eating, has swollen joints or a misshapen jaw, shows discharge from the nose or eyes, or cannot climb as it normally does. Bring the feeding log and weight record to the visit, since the pattern over months explains more than one day's behaviour. KinsLe Pet Passport gathers those records into one portable packet, so every check and visit builds on the last one.