Ground Skink

The ground skink, Scincella lateralis, is one of the smallest lizards in North America. It is also called the little brown skink, and a ground skink pet is neither legal in many states nor a good idea. It spends almost its whole life hidden under leaf litter, logs and mulch.

That is why most people who share a yard with dozens of them never see one. Adults reach only 3 to 5.75 inches (75 to 146 millimeters) total length. The tail makes up close to half of that measurement.

Its body is smooth and shiny, brown to golden brown. A narrow dark stripe runs down each side from snout to tail. The belly is pale yellow or white.

The most distinctive feature is a transparent window built into the lower eyelid. The skink can close its eyes to protect them from dirt and debris. It still sees through the clear disc, an adaptation shared with other litter dwelling skinks worldwide.

Identifying a Ground Skink

This lizard is easy to mistake for a juvenile of a larger species at first glance, but a few features settle it. The scales are smooth and glossy, giving the whole body a polished look rather than the rougher texture of many lizards.

Coloration runs from copper brown to almost black, usually with a dark stripe low on each side and no bright blue tail. That rules out young five lined and broad headed skinks, which carry an obvious blue or gray blue tail at that life stage.

Size is the fastest check in the field. A lizard under leaf litter that measures less than 6 inches nose to tail tip, with short legs and a pointed snout, is almost certainly a little brown skink rather than any other common eastern skink. Instead of running on those legs it wriggles through litter, a motion the Savannah River Ecology Laboratory describes as swimming.

Behavior and Range

The species is diurnal, active by day and hidden at night. They move in short, fast, snake like darts through leaf litter. This is far less visible than the open sprint of an anole across a fence.

Their legs are short relative to body length. They rely on lateral undulation more than most lizards. This lets them slip through debris almost like a legless reptile.

These skinks are highly sedentary. Radio tracking studies found average home ranges of about 52 square meters for males and 14 square meters for females. These are among the smallest home ranges recorded for a North American lizard.

The species ranges across the eastern and central United States. It spans from New Jersey and southern Illinois south to Florida. It also reaches west to Texas and Kansas, with populations extending into northeastern Mexico.

It favors humid deciduous forest floors and stream and pond edges. It also uses loose, moist soil under leaf litter or fallen logs.

Lifespan and Size

Wild individuals typically live 2 to 4 years. The Missouri Department of Conservation puts the typical figure at about 3 years, and research animals have reached about 2.5 years in captivity. That is short next to larger native skinks such as the broad headed skink or five lined skink.

Those larger species, profiled in the five lined skink guide, can live 5 to 6 years or more. A small body and fast reproduction come at a cost: heavier predation pressure and a shorter individual lifespan.

Total length of 3 to 5.75 inches makes this one of the smallest lizard species in the country. Males average slightly longer tails than females, around 64 millimeters versus 56 millimeters. The two sexes are hard to tell apart without close examination.

Diet

This species is a strict insectivore. They hunt inside the leaf litter layer rather than in open ground. Documented prey includes termites, ants, small beetles, wood roaches and millipedes, along with spiders, isopods and moth or butterfly larvae.

They locate prey using a mix of vision and chemical cues. They flick their tongue to sample scent, much like a snake does.

The lizards forage inside decomposing leaf litter all day. That makes them a natural, chemical free form of pest control in a garden bed. Removing leaf litter for a tidy lawn takes away both their food supply and their cover.

Breeding

Breeding season runs from April through July across most of the range. Timing shifts a little with local temperatures. Females lay eggs in moist soil, under logs or inside rotting wood.

A typical clutch holds 2 to 3 eggs. Clutch size can range from 1 to 6, depending on the female’s age and body condition. A single female can produce up to 4 clutches in one season.

That gives the species one of the higher annual outputs among small North American lizards. Eggs incubate for about 22 days before hatching.

Sources differ on the annual total. Animal Diversity Web reports 1 to 6 eggs per clutch and up to 4 clutches a year, while the Missouri Department of Conservation reports 2 to 7 eggs and usually 2 clutches. Regional climate and season length likely explain the gap.

Hatchlings reach sexual maturity at around 1 year of age. A skink born one spring can be breeding by the next.

• Breeding season: April to July
• Clutch size: 1 to 6 eggs, most commonly 2 to 3
• Clutches per year: up to 4
• Incubation: about 22 days
• Age at sexual maturity: about 1 year

Health, Predators and Defense

These skinks sit near the bottom of the food chain for small land vertebrates. Predation, not disease, is the leading cause of death. Snake predators include scarlet kingsnakes, copperheads and ringneck snakes.

Bird predators include eastern bluebirds and barred owls. Spiders and small mammals also take a share of the population.

Like many skinks, this species can shed its tail through autotomy when a predator grabs it. The detached tail keeps writhing and distracts the attacker while the skink escapes.

The tradeoff is measurable. A skink that has lost its tail sees escape speed drop from about 38 to roughly 28 centimeters per second. Speed recovers only once the tail regrows.

In captivity, most skin problems in small litter dwelling skinks trace back to housing that is too dry or too damp. Dry conditions cause dehydration and retained shed, which the Merck Veterinary Manual links to low humidity. Moist, contaminated bedding lets bacteria and fungi multiply, so damp, poorly ventilated setups promote skin infections instead.

A lizard with retained shed, swelling or lethargy needs attention. So does one that refuses food for several days. Either sign calls for a reptile veterinarian, not a home remedy.

Care: Law and Welfare Before Anything Else

The ground skink is a wild, native species, not a captive bred pet. The honest answer to “can I keep one” starts with state law, not with an enclosure setup.

Most states regulate the collection and possession of native nongame wildlife, including small lizards. These rules sit inside each state’s fish and wildlife code, and they vary widely.

Some states allow limited collection of common nongame reptiles with a hunting or fishing license. Others require a scientific or rehabilitation permit. A few prohibit collection of native reptiles outright.

Check current rules with your state wildlife agency before collecting or keeping any native reptile. These rules change over time and differ by species and by state.

The species is not listed under CITES. It carries an IUCN status of Least Concern across its range, but that global picture does not override state law.

A few states, including Illinois and New Jersey, list it as a species of special concern. The reason is habitat loss, not any immediate extinction risk.

Welfare is the second reason to leave one where you found it. This is a fossorial, leaf litter species with a tiny home range. It is built for constant contact with moist soil and decomposing wood.

Reproducing that environment well enough for long term welfare in a home tank is difficult. The animal gains nothing from captivity that its wild habitat does not already provide.

Zoos and accredited institutions that legally hold this species use naturalistic vivarium exhibits. Trained reptile staff build and monitor those exhibits, which is not a model for casual home keeping.

The better way to see these lizards up close is to build habitat for them instead. Leaving a layer of leaf litter, a rotting log or a brush pile in a corner of the yard gives them cover and food.

It does this without removing a single animal from the wild population. It also fits every state’s wildlife law at once.

Enclosure

Lizardist does not recommend keeping a wild caught little brown skink. This section describes the naturalistic setup used by zoos and licensed rehabilitators, not a home purchase list.

A legally held animal needs a low, well ventilated enclosure. Floor space runs at least 12 by 12 inches per animal. Substrate depth runs 3 to 4 inches, using leaf litter, coconut coir or a similar moisture retentive material.

The material must be loose enough for the animal to burrow into it. The enclosure also includes several layers of cover: cork bark, leaf litter piles and a shallow water dish.

These skinks rarely bask in the open the way a larger skink species does. Ventilation matters as much as humidity, since stagnant, oversaturated substrate breeds the bacteria and fungi behind most skin problems in litter dwelling lizards.

Heating and Lighting

This species comes from shaded forest floor habitat. They do not need the intense basking setups used for open habitat lizards like bearded dragons.

A naturalistic exhibit typically holds ambient temperatures around 72 to 80 degrees Fahrenheit. A subtle warm side near 82 to 85 degrees Fahrenheit sits under the leaf litter. A low wattage heat mat or overhead ceramic heater provides this, not a bright basking bulb.

Low intensity UVB, in the 2.0 to 5.0 range typical of shade dwelling reptile lighting, supports natural vitamin D synthesis. It does this without recreating the open sun exposure this species avoids in the wild.

A photoperiod of 12 to 14 hours of light in summer mimics the natural cycle. Winter hours drop to 10 to 12, tracking the seasonal shift tied to spring through summer breeding.

Cost

There is no legitimate retail cost to discuss for this species. It is not sold as a captive bred pet. Lizardist does not support acquiring wild caught native reptiles for the pet trade.

The only fair comparison is the ongoing cost an accredited facility bears to maintain a naturalistic exhibit. Substrate replacement, live insect culturing and climate control fall into the same range as other small insectivorous lizard exhibits. No institution publishes a per species budget, so no dollar figure is given here.

For a homeowner, the real “cost” of supporting the wild population runs the other way. It means leaving part of the yard unmanicured and keeping leaf litter and deadwood in place. That costs nothing and often reduces yard work.

The Missouri Department of Conservation calls this the most abundant forest dwelling lizard in that state, so a little cover goes a long way.

Frequently Asked Questions

What does a ground skink eat?

It eats small invertebrates found in leaf litter: termites, ants, beetles, wood roaches, millipedes, spiders and moth or butterfly larvae. They hunt using both sight and scent, flicking their tongue to track prey through decomposing plant matter.

How long do ground skinks live?

They live 2 to 4 years in the wild on average. Some individuals held under research conditions have reached about 2.5 years. That is short compared with larger native skinks, reflecting a life history built around fast reproduction.

Is it legal to keep a ground skink as a pet?

Rules vary by state, since native nongame reptiles fall under each state’s own fish and wildlife code. Some states allow limited collection of common species with a valid license, and others require a specific permit. Check your state wildlife agency’s current rules first.

What is the clear spot on a ground skink’s eyelid?

It is a transparent window built into the lower eyelid, sometimes called an eyelid disc. It lets the skink see even while its eyes are closed. This lets it keep foraging through abrasive leaf litter without risking eye damage.

How many eggs does a ground skink lay?

A female typically lays 2 to 3 eggs per clutch, though clutch size can range from 1 to 6. She may produce up to 4 clutches between April and July. Each clutch incubates in moist soil or rotting wood for about 22 days.

How is a ground skink different from other native skinks?

It is much smaller than the five lined skink or broad headed skink. It tops out around 5.75 inches, versus 8.5 to nearly 13 inches for those species. It also lacks their bright blue juvenile tail or orange breeding color, and it spends far more time hidden under leaf litter than basking on logs.