Brown Anole

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The brown anole is a small, quick, sun loving lizard. It has spread from the Caribbean across much of the southeastern United States. Most people first meet this lizard darting across a Florida patio, not in a pet shop.

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It is brown or grayish with darker mottling and a short snout. Males have a dewlap that flashes orange or red. They flare it open while doing quick push ups off a fence post or branch.

Anolis sagrei belongs to the anole family, a huge group of small lizards found across the Americas. In the wild it lives low to the ground. It favors fences, mulch beds, tree trunks and shrubs rather than the high canopy.

That ground level habit sets it apart from its cousin, the green anole. Green anoles spend far more time up in foliage. The two species often compete for the same low perches near homes.

Other anole relatives are worth knowing too. The knight anole is a much larger, treetop giant from Cuba. The Cuban false chameleon is also an anole relative, despite its misleading name.

Two subspecies are recognized: the nominate Anolis sagrei sagrei and Anolis sagrei mayensis from the Yucatan Peninsula. Its native range covers Cuba, the Bahamas, the Cayman Islands, Jamaica and parts of Belize, Guatemala and Honduras. Researchers first recorded it in the Florida Keys in the 1880s.

It has since spread far beyond Florida. Nursery plants and cargo shipments carried it to Texas, Hawaii and other states. It now ranks among the most abundant lizards anywhere it has settled.

Genetic work published in Nature in 2004 traced the Florida population to at least eight separate introductions from different parts of Cuba. That mix left the invaders with more genetic variation than any single native population. In its native range the IUCN Red List rates the species Least Concern.

Care Basics

The brown anole is one of the least demanding lizards a keeper can take on. It needs a warm, humid, well planted enclosure. It also needs live insects, fresh water droplets and a UVB bulb, such as the Arcadia ProT5 Kit Forest 6%.

It does not need to be handled and generally does not want to be. Most of what it needs mirrors its home range in Cuba and southern Florida: warm days, cooler nights, high humidity and dense cover. Keepers should always buy captive bred stock rather than collecting or relocating wild individuals.

Moving wild anoles between states can spread an already invasive species even further. New keepers deciding whether this species fits their setup may want to read a general guide on choosing a pet lizard first. Basic terrarium housing and reptile gear apply here too, just scaled down.

Daily care is short. A quick misting, a look at the water dish, and a few dusted crickets cover most days. Weekly care adds a deeper clean of the water feature and a check of the plants.

This species has proven surprisingly cold hardy for a tropical lizard. Populations now persist well into coastal Georgia, and it has been reported as far north as North Carolina, where winters bring occasional frost. That resilience is one more reason wildlife agencies keep a close eye on how far its range keeps expanding.

Enclosure Setup

A single adult does well in a tall, well ventilated enclosure. A good minimum size is 18 by 18 by 24 inches, since these lizards use vertical space more than floor space. Screen or hybrid glass and screen terrariums work better than solid glass tanks. See our brown anole enclosure guide for full setup details.

Good airflow helps prevent the respiratory problems that show up in stagnant, overly damp tanks. Pairs or trios can share a larger enclosure. A single male will not tolerate another male nearby.

Live plants are not just decoration here. Pothos, dracaena, small ficus and bromeliads give the lizard places to perch, bask and hide. They also help hold humidity naturally in the enclosure.

A substrate of coconut fiber, organic topsoil or a bioactive mix holds moisture well. It can support a cleanup crew of isopods and springtails in a bioactive setup. Branches, cork bark and horizontal perches near the basking light matter more than floor clutter, since these lizards spend most of their time climbing.

A shallow water dish is useful, but many individuals drink mainly from droplets on leaves after misting. This follows the same habit their wild relatives use in the rain.

Heating and Lighting

This species is heliothermic. It regulates body temperature largely by basking in direct sun. In captivity that means a basking spot around 90 to 95°F (32 to 35°C) under a halogen or incandescent bulb.

The cooler end of the enclosure should sit in the upper 70s°F, around 25°C. Night temperatures can drop into the low 70s°F without harm. The species tolerates cooler nights across most of its introduced range.

A UVB bulb in the 5.0 to 6.0 range supports natural vitamin D3 production and healthy bone growth. Mount it so the lizard can bask within 8 to 12 inches of the bulb. Many keepers pair a linear T5 UVB tube with a separate basking bulb, since one bulb rarely provides both.

Bulbs should run on a 12 hour cycle in summer. That cycle can shorten slightly in winter to mimic seasonal daylight. Humidity should sit around 60 to 70 percent for most of the day, with a light misting once or twice daily.

A small reptile fogger or automatic mister removes the guesswork for keepers who travel often. Good cross ventilation keeps that humidity from turning stagnant. That balance matters as much as the number on the hygrometer.

What They Eat

In the wild, this species eats a wide range of small arthropods. Crickets, ants, moths, grasshoppers, roaches, beetles, flies and spiders are all common prey, along with earthworms and snails. It is also an opportunistic predator of other small lizards.

That includes the eggs and hatchlings of the native green anole, which is part of why wildlife agencies treat it as a concern outside its home range. Occasional plant material and nectar have been reported as well.

Captive care mirrors that variety. Gut loaded crickets and dubia roaches form the base of most diets. Size prey no larger than the space between the lizard’s eyes.

Fruit flies suit juveniles well, and an occasional waxworm or silkworm makes a good treat. Dust prey with a calcium supplement, such as Zoo Med Repti Calcium without D3, at most feedings. Add a vitamin D3 and multivitamin powder once or twice a week.

Adults typically eat every one to two days. Offer as many appropriately sized insects as the lizard will actively hunt in a short window. Juveniles need daily feeding to keep pace with rapid early growth.

Remove uneaten insects if the lizard loses interest. Crickets left loose overnight can nibble on a resting anole. For more on gut loading and insect variety, see the site’s broader guide to feeding pet lizards.

Common Health Issues

Metabolic bone disease is the most common serious problem in captive anoles. It almost always traces back to inadequate UVB, low calcium, or both. Early signs include a soft or swollen lower jaw, tremors, and a weak grip.

A reptile veterinarian familiar with small lizards should see any anole showing these signs right away. Respiratory infections show up as open mouth breathing, mucus around the nostrils, and lethargy. These usually follow enclosures that run too cold, too damp, or both.

Check and correct temperature and humidity first. A vet visit is still warranted if symptoms persist more than a day or two. Because these lizards are so small, dehydration can move quickly from mild to serious.

Sunken eyes, loose wrinkled skin and reduced activity are the earliest warning signs. More misting and leaf droplets usually resolve mild cases. A vet should evaluate any anole that stops eating or drinking for more than a couple of days.

The site’s general reptile health guide covers warning signs common to small lizards in more depth.

Behavior and Temperament

Males are intensely territorial. They display at rivals, at their own reflection, and occasionally at a keeper’s hand. The display combines a flared dewlap with a rapid head bob or push up sequence.

Research on wild populations shows that contests between males usually favor the larger animal. Smaller males often move on rather than fight a losing battle. This same pattern plays out in captivity, which is why two males should never share an enclosure.

These lizards bask often on sunny days. They perch in the open on branches, fence rails or leaves, watching for both prey and rivals. When the weather cools, they retreat under bark, mulch or leaf litter.

That drop in activity during cool weather is normal. It does not usually signal illness on its own. This is not a lizard that enjoys handling, and most individuals will bolt, drop their tail, or bite if grabbed.

Keepers who want an interactive pet lizard are usually better served by a calmer species. This species is best enjoyed as an animal to watch rather than one to hold.

Breeding

The brown anole breeds readily through the warmer months. Females that are kept well fed can lay eggs even without a male present, though those eggs will not be fertile. A female lays a single round egg at a time.

She buries it in moist soil, leaf litter or rotten wood. She repeats this roughly every one to two weeks through the season. Sources differ slightly on the exact interval, with some closer to weekly and others closer to two weeks.

The pattern of frequent, single egg clutches is consistent across accounts. Over a full season a female can lay a dozen or more eggs this way, rather than in one large clutch. Both sexes typically reach maturity within about a year of hatching.

That fast pace lets the species build up numbers quickly wherever it settles. It is a major reason the brown anole has spread so widely across the southern United States. Keepers who want to breed them in captivity need a deep, moist layer for egg laying.

Females will dig if nothing suitable is provided. Eggs are usually left in place, or moved carefully to a container with damp vermiculite or sphagnum moss. Hatchlings are fully independent from the moment they emerge.

House hatchlings separately from adults. Adults will readily eat a hatchling they mistake for prey.

Lifespan and Size

Adults typically reach 5 to 8.5 inches (12 to 22 cm) in total length. Some large males push past 9 inches. Males grow noticeably larger and more robust than females, with a broader head and a more vivid dewlap.

Females stay smaller and slimmer, toward the low end of that range. In the wild, individuals can live up to around 5 years, according to invasive species researchers who track established populations. Captive lifespan is not as well documented in the scientific literature. Our brown anole size guide covers these measurements in detail.

Keeper reports vary, with some anoles living only a couple of years and others reportedly reaching 4 or 5 years under stable care. As with many small, fast maturing lizards, individual variation is significant.

Cost of Keeping One

A captive bred animal is itself inexpensive, usually 10 to 30 dollars depending on the seller and the animal’s coloration. The bigger cost comes from setup. A properly planted, screened enclosure with lighting runs roughly 150 to 300 dollars once a tank, UVB fixture, basking bulb, thermostat and plants are included.

Ongoing costs stay modest. Feeder insects, supplements and the occasional bulb replacement typically add up to 10 to 20 dollars a month for a single anole. Replace a UVB bulb roughly every 6 to 12 months, even if it still lights up, since UVB output fades before visible light does.

Frequently Asked Questions

Is a brown anole a good beginner pet lizard?

Yes, for keepers who want a low maintenance lizard to watch rather than handle. It tolerates a wide temperature range and eats a straightforward insect diet.

Can you keep it with a green anole?

It is not recommended. This species is a documented predator of green anole eggs and hatchlings, and the two compete aggressively for space and food.

Does this species need UVB lighting?

Yes. A UVB bulb in the 5.0 to 6.0 range supports healthy bone growth and helps prevent metabolic bone disease in this sun basking species.

Why is this lizard considered invasive?

It arrived in Florida from the Caribbean and has since spread to Georgia, Texas, Louisiana, Hawaii and California. It displaces native green anoles from habitat and preys on their eggs and young.

How often do they lay eggs?

A female typically lays a single egg roughly every one to two weeks through the warm months. That adds up to a dozen or more eggs across a season.

How big does it get?

Most adults reach 5 to 8.5 inches (12 to 22 cm) in total length. Males grow larger than females.