Gold Tegu

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A gold tegu does not stay small. The name comes from the metallic gold and black banding on Tupinambis teguixin, a big, muscular lizard from South America. Keepers also call it the golden tegu, the common tegu, or the Colombian black and white tegu.

It is easy to confuse the gold tegu with its larger cousin, the Argentine black and white tegu. Both are stocky, digging lizards from South America. The gold tegu is a separate species, usually a bit smaller, and for years it was far more common in stores as an imported or farmed animal than as a captive bred one.

This page covers what a gold tegu actually is and what it takes to keep one well. For a wider look at the group, see our overview of tegus and caiman lizards, including the red tegu and the very different caiman lizard.

Care Overview

Care for this species sits closer to large monitor husbandry than to beginner reptile care. Adults need a room sized enclosure, strong heat, and full UVB lighting. They also need a varied diet built around whole prey, not one feeder insect.

A hatchling that fits in a small tank will outgrow it fast. Most go through at least two enclosure upgrades in their first two years. A realistic care plan starts with the adult animal in mind.

Keepers who do well with this species treat it like a routine. Calm, regular handling and a predictable feeding schedule matter more than any single trick. Our guide to building large lizard enclosures covers the setup side in more depth.

Enclosure Size and Setup

An adult enclosure needs real floor space. This is a walking and digging lizard, not a climber. Many keepers build a custom enclosure around 6 feet long by 3 feet wide or larger for a full grown adult, such as the New Age Pet ECOFLEX 72 Inch Mojave Enclosure.

A hatchling can start in a 40 to 75 gallon tank. Plan on at least one upgrade, likely two, over the first two years. A tegu stuck in a cramped tank often shows stress and low activity.

Substrate should be deep and easy to dig. A mix of cypress mulch, coco coir, and topsoil works well. Keep it 6 or more inches deep in part of the enclosure so the lizard can dig.

Add a humid hide and a large, stable water dish big enough to soak in. Give the lizard secure hides on both the warm end and the cool end. Our reptile supplies guide lists equipment sized for a large digging lizard like this one.

Heating and Lighting

Basking surface temperatures in the mid to upper 90s Fahrenheit are standard for this species. A warm ambient side in the mid 80s and a cooler side in the mid 70s to low 80s round out the gradient. That range lets the lizard move around to regulate its own temperature.

A nighttime drop into the low to mid 70s is generally fine. It mirrors conditions in the wild. Strong full spectrum UVB, from a T5 HO tube around 10.0, such as an Arcadia ProT5 Kit Desert 12%, or a properly sized mercury vapor bulb, supports healthy bone growth in a species that basks heavily.

Humidity in the 60 to 80 percent range is a good target. A damp substrate pocket and regular misting help hold it there. Keepers commonly report that poor humidity causes more shedding problems in tegus than temperature does.

What Gold Tegus Eat

In the wild, Tupinambis teguixin eats almost anything it can catch. That includes insects, snails, small mammals, other reptiles, birds and their eggs, and fish. It occasionally eats fruit and honey too, along with turtle and caiman eggs when it finds them.

That broad wild diet is why a good captive diet leans on variety. A typical rotation includes appropriately sized whole prey such as mice or rats, cooked eggs, lean ground meat, and gut loaded insects like dubia roaches. Our answer to what lizards eat covers how this fits across species.

Some keepers add small amounts of fruit now and then, but it should stay a treat, not a staple. Calcium and vitamin powder, such as Zoo Med Reptivite, dusted onto insect meals, is standard for a fast growing lizard like this one. Overfeeding is a more common problem than underfeeding in captivity.

Common Health Issues

Metabolic bone disease from weak UVB or low calcium is a serious risk for any large, fast growing lizard. Weak jaws, bowed limbs, or sudden lethargy are warning signs. They call for a reptile veterinarian, not a home fix.

Obesity is a real risk too. A rich, prey based diet fed too often packs on weight fast for an animal built to hunt over a large territory. Respiratory infections from poor temperature or humidity, and burns from unguarded heat sources, round out the most preventable problems.

A new arrival, whether wild caught, farmed, or captive bred, benefits from an early fecal check and a general exam. Parasite loads are common in imported and farmed animals in particular. Our lizard health guide covers warning signs worth acting on fast.

Temperament and Behavior

This species is diurnal, so it is active during the day. They are also strongly food motivated once they settle into a routine. Wild tegus dig burrows to escape heat, predators, and dry spells, and captive animals often do the same given the chance.

Temperament varies by individual and by how the animal was raised. Keepers commonly report that animals handled calmly from a young age become tolerant, food focused adults. Animals that were caught wild as adults, or handled inconsistently, can stay more defensive.

This species is generally seen as a bit more reserved than its larger black and white relative. Individual variation is wide enough that no single description fits every animal. Patience in the first months matters more than any one training trick.

Breeding Gold Tegus

Like other teiid lizards, gold tegus lay eggs. Females dig a nest chamber, or sometimes use an arboreal termite nest, which the termites then seal around the eggs. Clutches run roughly 20 to 50 eggs, often around 30, and take about three months to hatch.

Captive breeding of this species has historically been less common than wild collection or farming. Farming operations in parts of its native range supplied much of the US pet trade for years. That history is part of why gold tegus have often cost less than captive bred tegu species.

Anyone considering breeding should work with a specialist keeper or breeder first. Published captive incubation data is thinner for this species than for some better studied relatives. Guesswork with eggs is a poor substitute for real experience.

Size and Lifespan

A full grown gold tegu typically measures 2 to 3 feet long, nose to tail tip, and some sources put large individuals closer to 4 feet. Adult weight commonly reaches roughly 3.5 to 4 kg, or about 8 to 9 pounds, in well fed captive animals. That still makes an adult smaller on average than a full grown Argentine black and white tegu.

Most of that growth happens fast. A hatchling can reach much of its adult length within the first one to two years given steady food and heat. That is exactly why enclosure planning needs to look ahead, not just match the animal in front of you today. Our Colombian tegu size guide covers this growth curve in detail.

With attentive care, a captive gold tegu commonly lives 10 to 20 years. Many reach their mid teens, and some individuals go past that. Lifespan depends heavily on diet quality, UVB access, and how early any health issues get caught.

How Much a Gold Tegu Costs

This species sits at the more affordable end of the tegu market. Prices commonly fall somewhere in the 50 to 150 dollar range, depending on age, source, and that year’s supply. Captive bred individuals, when available, usually cost more than farmed or imported animals.

The purchase price is almost always the smallest part of the real cost. A properly sized adult enclosure, strong UVB and heating gear, and years of varied whole prey add up to far more over the lizard’s life. It is worth budgeting for that before bringing one home.

Ongoing costs include fresh UVB bulbs every 6 to 12 months, electricity for heating, and a steady supply of feeder items. Add in regular veterinary checkups too. Anyone still weighing this species against others may find our guide to choosing a pet lizard useful first.

Frequently Asked Questions

How big do gold tegus get full grown?

A full grown gold tegu typically reaches about 2 to 3 feet in total length. Weight can reach roughly 3.5 to 4 kg. That is smaller on average than the Argentine black and white tegu, though both need a large enclosure as adults.

Is a golden tegu the same species as a gold tegu?

Yes. Golden tegu, gold tegu, common tegu, and Colombian black and white tegu are all common names for Tupinambis teguixin. They refer to the same species.

Are gold tegus good pets for beginners?

Gold tegus are not a typical beginner lizard. The enclosure size, UVB needs, and diet variety a full grown adult needs take real planning. Keepers with experience housing large, active reptiles tend to have the best results.

What do gold tegus eat in captivity?

The diet works best as a rotation of whole prey, cooked eggs, lean meat, and gut loaded insects. Add occasional fruit as a treat. This mirrors the varied diet the species relies on in the wild.

How much does a gold tegu cost to buy and keep?

The animal itself commonly costs somewhere around 50 to 150 dollars, depending on age and source. The enclosure, lighting, heating, and years of food usually cost far more over the lizard’s life.

How long do gold tegus live?

With consistent UVB, heat, and diet, captive gold tegus commonly live 10 to 20 years. Many reach their mid teens, and some go well past that. Lifespan tends to track closely with how well husbandry basics are kept up from the start.