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Green Iguana
Iguana iguana
Also called American iguana, Common green iguana, Gallina de palo (Spanish nickname)
From The Americas, from Mexico through Central America to southern Brazil and Paraguay, and many Caribbean islands. Introduced populations live in Florida, Puerto Rico, Hawaii, Texas and parts of Asia and the Pacific.12
A friendly guide, not veterinary advice. For anything about your pet's health, ask your vet.
At a glance the quick version
Wikipedia: males around 4 kg, females 1.2-3 kg, with very large individuals topping 8 kg
Looks how to spot one
Large tree-dwelling lizard with dewlap and dorsal crest
A big, long-tailed lizard with a row of soft spines along its back and tail and a large dewlap under the chin used for signalling and temperature control. On top of its head sits a small light-sensitive 'third eye' (parietal eye). Its leaf-shaped, finely serrated teeth are built for shredding plants.1
Personality what they are like
Intelligent and engaging, and can become genuinely affectionate, but the bond takes months of patient, gentle handling. Support the body from below and avoid sudden moves. Males can become more territorial during the breeding season.2
Daily activity how busy a day looks
Diurnal and arboreal, spending most time high up. Enjoys supervised free-roam time outside the enclosure for exercise. A strong swimmer in the wild.21
Grooming and care the hands-on bits
Mist twice a day or use an automatic system. Change loose substrate about monthly. Taming is an ongoing, daily process.2
Home where they are happiest
An adult needs at least about 3 x 1.5 x 1.8 m (10 x 5 x 6 ft), larger if possible; juveniles can start in about 120 x 60 x 120 cm. Basking surface around 50 C (120 F), air 24-31 C, nights 23-28 C. Humidity 60-80% by day, up to 100% at night. Strong UVB and bright lighting for 12-13 hours.2
Food basics what goes in the bowl
Herbivore. Roughly 60% dark leafy greens (collards, dandelion, turnip and mustard greens), 30% vegetables (squash, peppers, green beans) and 10% fruit, offered daily with a supplement.21
Company who they like around
Can live alone or in groups if the enclosure is scaled up, but adult males should not share space.2
The story where it all began
Carl Linnaeus described the green iguana in 1758. People in Central and South America have eaten it for around 7,000 years, giving rise to the nickname 'chicken of the trees'. It later became one of the most traded reptiles in the world pet market.1
Fun facts for the dinner table
- 1
It can drop about 15 m from a tree to the ground and land unharmed.1
- 2
It swims by tucking its legs against its body and sweeping its tail from side to side.1
- 3
Its parietal 'third eye' on top of the head senses changes in light and helps it spot shadows from above.1
- 4
Despite the name, populations come in many colours, from bluish in Peru to orange in Mexico.1
Recognised by the official bits
- IUCN Red List
- Least Concern1
- CITES
- Appendix II1
Popularity About 800,000 green iguanas were imported into the US in 19951
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Green Iguana. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- Fresh waterevery day
- Temperature checkCheck the warm and cool endsevery day
- Spot cleanevery day
- FeedingHow often depends on species and agevaries
- SupplementsCalcium and vitamin dusting as your vet recommendsas your vet recommends
- UVB bulb changeMany UVB bulbs fade before they stop glowing, follow the maker's adviceevery 6 months
- Weigh inevery month
- Full cleanevery month
- Vet check-upFind a vet who sees exotic petsevery year
Owner questions the things everyone asks
How often should I feed my Green Iguana?
Feed your Green Iguana daily with a fresh mix of dark leafy greens, vegetables, and a little fruit. Furry Diary's starting plan is to offer food every day, and you can adjust portions based on your iguana's age and appetite. For exact amounts, check the food label and ask your vet.21 Furry Diary plan
What does a Green Iguana eat, and what should it never eat?
Your Green Iguana is a strict herbivore: about 60% dark leafy greens like collards and dandelion, 30% vegetables like squash and peppers, and 10% fruit, all offered daily with a supplement. Never feed it animal protein, insects, or high-oxalate greens like spinach, as these can cause health issues. Always dust food with calcium and vitamins as your vet recommends.21 Furry Diary plan
How much space does a Green Iguana need?
An adult Green Iguana needs a very large enclosure, at least about 3 x 1.5 x 1.8 meters (10 x 5 x 6 feet), and bigger is better. Juveniles can start in a 120 x 60 x 120 cm space, but they grow fast. This arboreal lizard also enjoys supervised free-roam time outside the enclosure for exercise.21
What temperature, light or water does a Green Iguana need?
Provide a basking surface around 50°C (120°F), with air temperatures of 24-31°C and nights at 23-28°C. Humidity should be 60-80% by day and up to 100% at night, so mist twice daily or use an automatic system. Strong UVB and bright lighting for 12-13 hours daily are essential, and change the UVB bulb every 6 months as the maker advises.2 Furry Diary plan
How often should I clean a Green Iguana's home?
Spot-clean the enclosure daily to remove waste and uneaten food. Furry Diary's starting plan suggests a full clean and substrate change about once a month, though you may need to adjust based on your setup. Always keep fresh water available and change it daily.2 Furry Diary plan
Can a Green Iguana live with others?
Green Iguanas can live alone or in groups if the enclosure is large enough, but adult males should never share space as they become territorial. For a harmonious group, scale up the habitat significantly and monitor for any aggression. A single iguana often bonds well with its owner.2
How long does a Green Iguana live?
With proper care, a Green Iguana can live 15 to 20 years, so it's a long-term commitment. This lifespan depends on good diet, habitat, and regular vet check-ups with an exotic-pet vet. Enjoy many years with your intelligent companion.2
Can I handle a Green Iguana?
Yes, but it takes months of patient, gentle handling to build trust. Always support the body from below and avoid sudden moves, as males can become more territorial during breeding season. Handling is a daily, ongoing process that can lead to a genuinely affectionate bond.2
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at [email protected] and we will fix it.
- Green iguana - Wikipedia en.wikipedia.orgused for names, range, size, weight, body, colours, behaviour, diet, history, IUCN, CITES, fun facts
- Green Iguana Care Sheet - ReptiFiles reptifiles.comused for care, habitat, diet, social needs, size, lifespan, temperament
- VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
- ASPCA: Dog grooming tips aspca.orgused for owner questions
- ASPCA: Cat grooming tips aspca.orgused for owner questions
- ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
- RSPCA: What to feed your rabbit rspca.org.ukused for owner questions
Checked 2026-09-30. Text is written in our own words from these sources.