You can preserve a dead lizard using either a wet method (submerging it in alcohol) or a dry method (desiccating it with borax or similar agents). The approach you choose depends on whether you want a lifelike posed specimen or a jar-preserved one for long-term study or display. Both methods work well for small reptiles, but each requires careful preparation to prevent decay.
Before handling any dead reptile, put on disposable gloves. Reptiles commonly carry Salmonella bacteria in their digestive tracts, and that risk doesn’t disappear after death. Wash your hands thoroughly with soap and water when you’re done, and change your clothes before touching food or interacting with small children.
Check Legal Restrictions First
Most common backyard lizards (anoles, fence lizards, geckos) are not federally protected, but some species are. State wildlife laws vary widely. Certain states require a salvage permit to collect even a dead wild animal, while others have no restrictions on roadkill or naturally deceased reptiles. If the lizard is a species you can’t identify, or if you found it in a state or national park, check with your state fish and wildlife agency before preserving it. Endangered or threatened species are always off-limits without a permit.
Wet Preservation in Alcohol
Wet preservation is the method museums use for reptile collections. It keeps the specimen intact, including internal anatomy, and works especially well for small lizards that would become too fragile if dried. The tradeoff is that you’ll need to maintain the fluid over time.
Fixing the Specimen
Fixing is the first step. It halts decomposition by chemically stabilizing the tissues. For small lizards (under about six inches), you can often fix the entire animal by simply submerging it in a strong alcohol solution. Use 95% ethanol at full strength for the initial fix. Arrange the lizard in the position you want before submerging it, because the tissues will stiffen within a day or two and hold that pose permanently. Spread the toes, flatten the tail, and tuck the limbs into a natural resting position.
For larger lizards, external soaking alone won’t penetrate deeply enough. You’ll need to inject the fixing solution into the body using a small syringe. Inject into at least two points in the body cavity: once in the abdomen and once near the heart, just behind the front legs. You can also inject small amounts into the base of the tail and the thickest part of each limb, though go easy since these aren’t hollow cavities and too much fluid will distort the tissue. The goal is to get the fixative into the core of the animal before bacteria can take hold.
Leave the specimen in the fixing solution for at least two to three days. Larger specimens may need a week or more.
Transferring to Storage Solution
After fixing, move the lizard into a weaker alcohol solution for permanent storage. The standard ratio is 3 parts 95% ethanol to 1 part water, which gives you roughly 70% alcohol. This concentration preserves tissue without making it overly brittle. If you don’t have access to lab-grade ethanol, 70% isopropyl alcohol from a pharmacy works as a secondary option and is the most neutral choice for long-term storage.
Use distilled water for mixing, not tap water. Minerals and chlorine in tap water can discolor the specimen over time.
Choosing the Right Container
The jar matters more than most people expect. Fluid evaporation is the biggest threat to a wet specimen’s longevity. Glass jars with polypropylene screw-top lids provide a good seal, especially in sizes of 300 milliliters and up. Smaller jars tend to allow more evaporation because the lid doesn’t fit as precisely. If you’re using a bail-style jar with a rubber gasket, white Buna-N rubber gaskets resist alcohol degradation better than standard silicone.
For an extra layer of protection, seal the junction where the lid meets the jar with a wrap of sealing tape. Testing at the Canadian Museum of Nature showed this significantly slows alcohol evaporation from storage containers. Mason jars work in a pinch, but their metal lids will corrode from alcohol exposure within a few months. If you use one, place a polyethylene insert between the lid and the jar opening.
Dry Preservation With Borax
Dry preservation produces a lightweight, posed specimen you can display without a jar. It works best for small to medium lizards with relatively thin bodies. Very large or thick-bodied lizards may rot internally before drying is complete, making wet preservation a safer choice for them.
Preparing the Body
Start as soon as possible after the lizard dies. If you can’t begin right away, refrigerate the body (don’t freeze it, as ice crystals damage tissue and cause the skin to crack during drying). Remove any visible debris and gently pat the lizard dry with a paper towel.
If the lizard still has its internal organs, you have two options. For very small lizards like anoles or house geckos, you can leave the organs in place and rely on the desiccant to dry them out. For anything larger, carefully make a small incision along the belly and remove the soft organs with tweezers. This dramatically reduces the risk of internal rot and odor during the drying process. Rinse the cavity gently and blot it dry.
Applying the Desiccant
Borax (sodium borate) is the most commonly used desiccant for home preservation. It’s inexpensive, available in the laundry aisle, and acts as both a drying agent and a mild antimicrobial. Coat the lizard thoroughly, packing borax into the body cavity if you opened it, and covering all skin surfaces. Pay extra attention to the joints, toe pads, and the base of the tail where moisture lingers.
Place the coated lizard on a bed of borax in a shallow cardboard box or plastic container. Pose it the way you want it displayed, pinning the limbs gently with straight pins if needed to hold them in place. Cover the lizard with another layer of borax so it’s fully buried. Store the container in a dry, well-ventilated area away from direct sunlight.
Drying Time and Finishing
Small lizards typically dry in two to four weeks. You’ll know the process is complete when the body feels rigid, lightweight, and papery to the touch with no soft spots. If any area still feels pliable, rebury it in fresh borax and wait another week.
Once fully dried, gently brush off the excess borax with a soft paintbrush. The specimen will be fragile, so handle it by the torso rather than the limbs or tail. You can display it in a shadow box or under a glass dome. Keep it away from humidity, as reabsorbed moisture can cause mold growth or attract insects.
Maintaining a Wet Specimen Long-Term
A wet specimen isn’t a set-and-forget project. Check the fluid level every few months. If the alcohol drops below the top of the specimen, tissue exposed to air will dry out, discolor, and eventually deteriorate. Top off with the same concentration of alcohol you originally used.
Over time, the fluid may turn yellow or brown as pigments leach out of the specimen. This is normal and doesn’t necessarily mean the preservation has failed, but heavily discolored fluid has a lower effective alcohol concentration and should be replaced. To do this, remove the specimen with gloved hands, gently rinse it with distilled water using a squeeze bottle, wash the jar with soap and distilled water, let it dry completely, then return the specimen and fill with fresh 70% isopropyl alcohol.
Keep a written record of what solution the specimen is stored in and when you last changed it. Write the note in pencil on acid-free paper and tape it to the bottom of the jar with archival tape. This seems fussy, but it’s exactly what museum collections do, and it means anyone handling the specimen years from now will know what’s inside without having to guess.
Which Method Lasts Longer
Both methods can preserve a lizard for decades if maintained properly. Wet specimens in museums have lasted well over a century with periodic fluid replacement. Dry specimens are lower maintenance but more vulnerable to physical damage, insect pests, and humidity. A borax-dried lizard kept in a sealed display case in a climate-controlled room can last indefinitely. One left on an open shelf in a humid basement will grow mold within a year.
If your goal is a display piece, dry preservation gives you a visible, three-dimensional specimen without the weight and bulk of a jar. If you want to preserve the animal’s full anatomy for study, or if the lizard is too large to dry reliably, wet preservation is the more forgiving choice.