Brown Anoles in Florida: Identification and What to Do Indoors

Brown anoles (Anolis sagrei) are small, nonnative lizards often seen around South Florida homes. Adults measure about 5 to 9 inches from snout to tail tip. They use sunny yards, fences, tree trunks, and building walls. Their color ranges from brown to gray, dark, or reddish; native green anoles can also look brown or gray. If one gets indoors, check where it may have entered.

How can I tell a brown anole from a green anole?

Brown anoles can lighten or darken, but they do not turn green. Native green anoles can change between green, brown, and gray, so color alone can mislead. People sometimes call anoles chameleons, but true chameleons are a different group of lizards.

Look at several features from a distance. Brown anoles often have bolder markings along the back and sides and a shorter snout. Adult females commonly have a light stripe down the center of the back. Males can display an orange throat fan edged with yellow and may raise a crest along the back. Green anoles generally have a longer, more pointed snout. Their males often have a pink throat fan in much of Florida, though it can be dull gray or green in the southwest. No single feature is enough to confirm the species.

Take a clear photograph from a safe distance to document the markings and where it was seen. If the features remain unclear, leave the identification tentative instead of guessing from color.

Where are brown anoles common?

Brown anoles are native to Cuba, the Bahamas, and other West Indian islands. They were first documented in Florida in Key West in the late 1800s, likely arriving with cargo. Since then they have spread across the Florida peninsula and into parts of the Panhandle. They are common in South Florida neighborhoods and other areas shaped by people.

Nonnative describes an animal outside its natural range. Invasive is used for a nonnative species that becomes established and causes, or can cause, harm. Brown anoles are widespread in Florida, and documented concerns include effects on native wildlife. The term describes ecological status, not a direct danger to people.

They stay close to the ground or low shrubs, tree trunks, fences, and walls. They favor open, sunny places and can shelter in narrow spaces around buildings, including gaps behind storm shutters and rain gutters. Most are active during the day, though some forage at night around lights that attract insects. A lizard on a patio or wall may simply be using nearby cover; that sighting does not show that any are inside the home.

People can move brown anoles unintentionally in ornamental plants, yard debris, boats, or other items; eggs may travel in potted plants. Before taking plants or gear to a park or natural area, inspect them for hidden lizards or eggs. This helps avoid carrying them to another site; it does not control the population already established in South Florida.

What do brown anoles eat?

Brown anoles eat mostly insects and other small invertebrates; they may also eat vegetation and small lizards, including other anoles. They may catch some insects around a yard, but you should not rely on them to control ants, roaches, or household pests. A lizard in the yard does not tell you whether a separate indoor pest problem exists.

Are brown anoles dangerous to people?

Brown anoles are not known to pose a direct hazard to people, but they can bite if caught or handled. Leave them alone when possible and keep children and pets from trying to grab them. They can enter rooms, garages, sheds, and screened spaces, where they may be difficult to capture. An indoor sighting is a nuisance, but by itself does not show a larger insect infestation.

What should I do if one gets indoors?

Give the lizard space and do not chase it into a hiding place. If you can do so safely, open an exterior door and clear a route outside. Keep pets out of the room while it moves toward cover or an exit. If you are uncomfortable, ask a qualified local wildlife or identification professional for advice. Note which room it was in and where doors, windows, or screens were open; repeated patterns can help you spot an entry route.

For repeated entries, check for a way in rather than treating a single sighting as an infestation. Look for torn screens, gaps under doors, and openings around windows or utility lines. Brown anoles can shelter behind shutters and in rain gutters, so inspect those areas too. Repair damaged screens and close accessible entry gaps where appropriate. These steps address access to the building; they cannot prevent anoles from using the yard or nearby vegetation.

How do brown anoles affect native green anoles?

Where brown and green anoles share habitat, native green anoles can move higher into vegetation. That shift can make them harder to see from the ground; it does not mean they have disappeared from the area. Brown anoles can also prey on young green anoles. Habitat loss and urban development affect native wildlife too, so brown anoles are not the only factor, and local effects can vary with available cover.

To support native green anoles, maintain vegetation at different heights, including shrubs and trees that offer cover above ground. This provides habitat but does not guarantee green anoles will return or brown anoles will leave.

What if lizards keep getting inside?

If lizards repeatedly appear in one area, note where you find them and look for a recurring opening. A photo from a distance may help if the species is uncertain. Before arranging pest or wildlife service, ask whether the provider handles lizard entry specifically; a general pest-control service does not confirm that coverage. You can contact Pest Busterzz to ask about its current scope before scheduling.