Leopard geckos live 15 to 20 years in captivity with good care, and many reach 10 to 15 years. In the wild they usually live well under 10 years. Males tend to outlive females, mainly because laying eggs takes a toll. A leopard gecko is a long commitment, often longer than a cat or dog, so the setup you build in the first year matters for the next two decades.
Below is a lifespan chart, the life stages from hatchling to senior, what most often shortens a leopard gecko's life, and what you can do to help yours live longer.
Leopard gecko lifespan chart
| Setting | Typical lifespan |
|---|---|
| In the wild | Usually under 10 years, often 6 to 8 |
| In captivity, average care | 10 to 15 years |
| In captivity, good care | 15 to 20 years |
| Exceptional cases | Into the mid or late 20s, but rare and hard to verify |
| Males vs females | Males often live a few years longer, especially compared with females that are bred |
Wild leopard geckos face predators, cold winters, droughts and lean seasons. Pet geckos avoid all of that, which is why a well kept gecko can live two or three times as long as a wild one.
Leopard gecko life stages
| Stage | Age | What to expect |
|---|---|---|
| Hatchling | 0 to 4 months | 3 to 4 inches long, eats small insects every day, sheds often |
| Juvenile | 4 to 12 months | Grows fast, eats every day or every other day |
| Subadult | 12 to 18 months | Growth slows, sexually mature, adult colours settle |
| Adult | 18 months to about 10 years | 7 to 10 inches long, about 45 to 80 grams, eats 2 to 3 times a week |
| Senior | About 10 years and up | Less active, eats less, may lose some weight and muscle |
Adults need the same temperatures as babies, but less food. Our leopard gecko diet guide has feeding amounts by age.
What shortens a leopard gecko's lifespan
Most leopard geckos that die young die from problems with their care, not old age. These are the common ones:
- Metabolic bone disease. Caused by too little calcium and vitamin D3. It softens the bones and jaw, and is the most common serious illness in pet leopard geckos. It is easy to prevent with calcium powder.
- Wrong temperatures. Without a warm spot of 90 to 95°F a gecko cannot digest its food, which leads to weight loss, regurgitation and a weak immune system. Too much heat causes burns.
- Impaction. A blockage in the gut, often from swallowing loose sand or from being fed insects that are too large.
- Obesity. Too many waxworms or superworms leads to fatty liver disease. A healthy tail is thick, but the belly should not drag.
- Breeding. Females can lay 8 to 10 eggs a season, which drains calcium and fat reserves. Egg binding, where an egg gets stuck, can be fatal.
- Parasites and infections. Cryptosporidium causes "stick tail", where the tail wastes away. Dirty tanks and wild caught insects raise the risk.
- Stress. Housing two geckos together, especially two males, causes fighting and chronic stress. Leopard geckos do best alone.
How to help your leopard gecko live longer
- Get the heat right and keep it right. Run a heat mat or heat lamp on a thermostat and check the floor of the warm spot with a digital probe thermometer. Our leopard gecko temperature chart has the numbers for day and night.
- Dust insects with calcium. Use plain calcium at most feeds and a calcium with D3 and multivitamin once or twice a week, or keep a dish of plain calcium in the tank.
- Feed a varied, gut loaded diet. Base meals on crickets and dubia roaches, add mealworms for variety, and keep waxworms as a rare treat.
- Use a safe substrate. Paper towel, tile or a soil mix are safer than loose calcium sand. See our substrate guide.
- Give it three hides. A warm hide, a cool hide and a humid hide for shedding. Stuck shed on toes and tail tips can cut off blood flow. Our hides guide covers sizes and placement.
- Weigh it every month. A digital gram scale catches weight loss weeks before you would see it. A steady drop is the earliest sign of most illnesses.
- Keep it alone and don't over breed. House one gecko per tank, and if you breed a female, give her seasons off.
- Find a reptile vet before you need one. A yearly check and a fecal test for parasites catch problems early.
How to tell how old a leopard gecko is
There is no exact way to age an adult leopard gecko. Size gives a rough guide up to about 18 months: hatchlings are 3 to 4 inches, and most reach adult length of 7 to 10 inches by 18 months. Hatchlings and young juveniles also have bold black and yellow bands that break up into spots as they grow. After that, a gecko's age is a guess, so buy from a breeder who records hatch dates.
Signs of old age in leopard geckos
- Sleeping more and exploring less
- Eating less, or skipping meals more often
- Slow, gradual weight loss and a thinner tail
- Duller colours and slower sheds
- Cloudy eyes or slower reactions when hunting
Sudden changes are not old age. Rapid weight loss, a shrinking tail, runny droppings or not eating for weeks in a gecko of any age need a vet. See also how to tell if your leopard gecko is happy.
Leopard gecko lifespan FAQ
How long do leopard geckos live as pets?
Usually 15 to 20 years with good care, and 10 to 15 years on average. A few have been reported to live into their late 20s.
How long do leopard geckos live in the wild?
Usually under 10 years, often 6 to 8. Predators, cold winters and food shortages mean few wild geckos reach old age.
Do male or female leopard geckos live longer?
Males often live a few years longer. Laying eggs drains a female's calcium and fat reserves, and egg binding can be fatal, so females that are bred tend to have shorter lives.
What is the most common cause of death in pet leopard geckos?
Problems with care, especially metabolic bone disease from too little calcium and vitamin D3, digestive problems from wrong temperatures, and impaction. Most are preventable.
At what age is a leopard gecko fully grown?
Most reach adult size of 7 to 10 inches and 45 to 80 grams by about 18 months, and they are sexually mature at 9 to 12 months.
Is a 10 year old leopard gecko old?
It is entering its senior years but is not old for the species. With good care a 10 year old gecko can easily live another 5 to 10 years.
Getting a new gecko? Our leopard gecko starter kit checklist has everything it needs for a long life.