Twenty years is the reward; few iguanas are given the chance
A green iguana kept correctly lives 15 to 20 years in captivity, yet the species is famous for not getting there: the pet trade is full of charming hatchlings the size of a finger, and short on owners who understood that the finger grows into a five-to-six-foot, strongly opinionated herbivore. Most iguanas that die young are not unlucky — they are under-housed, under-lit, or fed like little omnivores instead of the strict leaf-eaters they are. Choosing an iguana honestly means planning for the animal at year fifteen, not the one in the shop tank.
The housing and lighting math nobody does at the shop
An adult iguana needs an enclosure closer to a small room than a tank: room to climb, room to turn that long tail, a basking platform holding around the mid-nineties, a cooler retreat, and humidity kept high with daily misting or soaking. Over it all sits proper UVB lighting, replaced on schedule because tubes stop giving useful UV long before they stop glowing. Skimp on any of these for years at a time and the costs arrive as weak bones, kidney strain, and a shortened life — the gap between a five-year iguana and a twenty-year one is mostly written in this setup, repeated daily.
An herbivore that eats like a gardener
Iguana longevity is plated up in leafy greens: collards, mustard and turnip greens, and dandelion as the daily base, with vegetables and a little fruit for variety and calcium kept in balance. Animal protein, which eager hatchlings will happily accept, quietly damages kidneys over years — one of the classic reasons pet iguanas fade early. Expect a big daily salad, prepared fresh, for two decades.
The relationship needs managing across those years as well. A young iguana habituated to calm daily handling usually matures into a tolerant adult, while one grabbed at and chased stays defensive — and a defensive six-foot lizard with a whipping tail makes its own care harder and rougher. Male iguanas commonly go through a breeding-season personality change, turning restless and territorial for weeks at a time; households that expect it, and adjust handling rather than punishing the animal for it, come through those seasons with the routine — and the iguana's trust — intact. Shedding tells a similar long story: a growing iguana sheds in frequent patches, an adult in slower cycles, and skin that repeatedly sticks around toes and tail tip is an early, visible hint that humidity or soaking has slipped in the routine.
The workload of a lizard the size of a small dog
Feeding, soaking, misting, spot-cleaning a large enclosure, and calmly socialising an animal that can whip, scratch, and — in breeding season — turn territorial is more than a weekend hobby; it is a daily rota. In most households that rota survives twenty years only if it is shared rather than carried by one person's memory and goodwill. KinsLe's Care Teams let everyone in the house take named iguana duties — salads, soaks, enclosure checks — with each completed task timestamped, so nothing in a very long care routine depends on someone remembering.