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Squirrels & Wildlife

How Long Do Lizards Live? By Species, Wild vs. Kept

Backyard lizard lifespan runs from 1 year to over 20, depending entirely on species and whether it is wild or kept as a pet. The real numbers, by common type.

By The Grow In Backyard Team 3 min read Save to Pinterest — opens Pinterest in a new tab
A lizard with a bright blue tail basking on a rock
Photo: Vincent Vega, CC BY-SA 4.0, via Wikimedia Commons
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“How long do lizards live” does not have one answer, because it is really several questions wearing one search query. A wild anole in a backyard and a captive bearded dragon are both lizards, and their realistic lifespans differ by a factor of ten.

Lifespan by common type

Typical lifespan, wild versus kept
TypeWild lifespanKept lifespanCommon in
Anole1–3 years4–8 yearsSouthern US gardens, houseplants
Common garden skink2–6 years5–10 yearsLawns, garden beds, under mulch
Gecko (house/wall species)3–8 years10–20 yearsWalls, patios, warmer climates
Bearded dragonNot typically wild in the US10–15 yearsPet trade only
Blue-tongued skinkNot typically wild in the US15–20 yearsPet trade only

The pattern across every row is the same: whatever a species can biologically reach, wild individuals of that species fall well short of it, and kept individuals get much closer.

Why the gap is so large

It is not that captivity makes lizards biologically longer-lived — it is that most of what kills a wild lizard young is removed. Predation from birds, cats, and snakes accounts for the majority of wild lizard deaths well before old age becomes a factor, alongside harsh winters and inconsistent food. A kept lizard faces none of that.

Why most wild lizards do not reach old age

Three pressures do almost all of the work:

Predation. Birds, outdoor cats, snakes, and larger lizards all prey on small lizard species, and juveniles are especially vulnerable in their first year.

Winter. In any climate with a real cold season, lizards that do not find adequate shelter do not survive it. This is a hard ceiling on lifespan in much of the US, regardless of what the species is biologically capable of.

Food consistency. Wild lizards depend on insect availability, which fluctuates with weather and season in a way a kept animal’s diet does not.

What this means if you are seeing lizards in your yard

A lizard living in a garden is very unlikely to be an old individual — the odds simply are not with it. If you are noticing the same-looking lizard in the same spot across multiple seasons, that is a genuine sign of a stable, sheltered habitat doing its job: enough cover, enough food, and few enough predators that one individual is beating the usual odds.

Lizards are also, on balance, a garden asset rather than a pest — most common species eat insects including some that damage plants, and none of the small lizards found in typical US backyards pose any real risk to people or pets. For what they are actually hunting, see what do lizards eat.

Common questions

How long do lizards live in the wild versus as pets?

Kept lizards typically live two to three times longer than wild ones of the same species. A wild anole rarely sees its third year, largely due to predation, while a well-kept pet anole can reach 4–8 years. The gap is almost entirely about predator pressure and reliable food, not biology.

What is the longest living lizard?

Among common backyard and pet species, bearded dragons and blue-tongued skinks regularly reach 10–20 years in captivity. Some larger monitor lizard species live even longer, into their 20s, though those are not typical backyard or pet-trade animals.

How long do garden lizards typically live?

Most small lizards found in a backyard in the US — anoles, skinks, geckos — are wild individuals with a natural lifespan of 1–6 years, and predation, not old age, ends most of their lives well before that ceiling.

Do lizards die of old age?

Rarely in the wild. The overwhelming majority of wild lizards are taken by predators, disease, or harsh winters long before reaching their species' maximum natural lifespan. Old age as a cause of death is mostly seen in kept animals, where those risks are removed.

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