Moving House with a Lizard: Heat Continuity, Escape Risk and Rebuilding the Enclosure

Quick answer

Moving house with a lizard is a heating problem before it is anything else. A dog copes with a long day in an unheated van and a cold night in an empty house. An ectotherm does not, because everything it uses to stay alive runs on heat that has to come from outside its body.

So the plan is built around one rule: the enclosure is the last thing packed and the first thing rebuilt, and the animal stays warm and with a person for the whole gap in between.

The goal is a rebuilt enclosure running at the right temperatures before the animal ever arrives at the new address.

• Never put a lizard in the removal van, and never in the boot of a car. It travels in the cabin, with you.
• Never transport a lizard inside its glass vivarium. Heavy decor moving in transit crushes and injures animals.
• Set up and run the enclosure in the new house before the lizard goes in, and verify the basking surface with a thermometer, not by feel.
• Stop feeding before a long journey. A cool lizard cannot digest, and undigested food in a stressed animal is regurgitated or rots.
• Expect appetite loss and hiding afterwards. In most lizards that lasts far longer than owners expect and is not itself a reason to panic.

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Never leave a lizard in a parked vehicle, and never put a chemical hand warmer or heat pack in direct contact with the animal or the container floor.

The inside of a car in sun climbs fast and does not stop at a survivable temperature, and a reptile in a sealed box has nowhere to escape to. In cold weather the same box loses heat just as fast.

Heat packs reach surface temperatures that cause full thickness burns. If you use one, it goes outside the container or wrapped in several layers of towel with a barrier the animal cannot reach, and never under the surface the animal is lying on.
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Decide in 60 seconds

Why relocation is a thermal problem

A lizard's immune function, digestion, activity and appetite all run at rates set by its body temperature, and its body temperature comes from the enclosure.

Unplug the enclosure and the animal loses all of that at once. It is not simply uncomfortable. It stops digesting whatever is in its gut, its immune response slows, and if it is cold for long enough the food already eaten becomes a problem rather than a resource.

That is why the gap between switching the old enclosure off and switching the new one on is the number to minimise. Everything else in a reptile move is arranged around shortening that gap and keeping the animal within a tolerable range while it lasts.

The second reason relocation goes wrong is mechanical. Enclosure decor is heavy, and a slab of slate or a large branch travelling with the animal in the same box is a crush injury waiting to happen.

Two to four weeks before

Choose the room before you choose anything else.

Look for stable temperature, no direct sun through a window, no draught from a door or a vent, and enough sockets on a circuit that will not be tripped by the kettle. Direct sun on a glass enclosure raises the inside temperature far beyond what the lamps are set to, and it does it quickly.

Check the new heating.

A different house heats differently. A room that is comfortable for people can sit several degrees below the room the lizard came from, which changes both the cool end and the night low. Plan to remeasure everything, not to reuse the old settings.

Sort paperwork if your species needs it.

If your lizard is licensed, registered or microchipped in your country, update the address on the record. Check before the move rather than after, because some species carry keeping requirements that are tied to the property.

Find a reptile vet near the new address now.

General practices often do not see reptiles. Finding this out during an emergency in an unfamiliar area is a bad time to find it out.

Order a spare bulb and a spare thermostat fuse.

Equipment fails when it is transported and re-plugged. A spare removes the worst version of a first night.

The week before

Reduce and then stop feeding, timed to the species and the size of the meal. A journey is much safer on an empty gut, and going without a meal is not a hardship for a healthy adult lizard.

Weigh the animal on a gram scale and write it down. That number is your reference point for the whole settling period, and it is the difference between a vague impression and a fact.

Assemble the travel container and let it live in the room so it stops being novel. It should be opaque or partly covered, ventilated, small enough that the animal cannot be thrown around, and latched in a way that cannot pop open.

Keep the same hides and furnishings. Familiar cover is one of the few things you can carry over intact from the old house.

Photograph the assembled enclosure from several angles. Rebuilding from a photograph is faster and more accurate than rebuilding from memory at eleven at night, and a lizard settles better into a layout it already knows.

Moving day

Take the lizard out of the enclosure and into its travel container first, before you dismantle anything.

Line the container with paper towel rather than loose substrate. Loose substrate becomes airborne and abrasive in a moving vehicle, and it can be inhaled or swallowed by a stressed animal.

Add one familiar hide or crumpled paper for cover, and nothing heavy. No rock, no slate, no branch, no ceramic dish. A full water bowl will empty itself in the first corner, so for shorter journeys leave it out and hydrate before and after instead.

Keep the container out of the way of the movers, in a room with the door shut and a note on it, or already in your car.

Then strip the enclosure. Turn lamps off and let them cool fully before they are handled or packed, and pack UVB tubes and bulbs separately and padded, because filaments and phosphor coatings do not survive being rattled.

Take the lizard in the car cabin, secured on a flat surface or footwell so it cannot slide, and keep the cabin within a temperature you would find comfortable. In winter, warm the car before the animal goes in. In summer, use air conditioning and never park in sun.

Rebuilding before the animal moves in

Set the enclosure up in the chosen room, plug it in, and let it run before you open the travel container.

Give the lamps and the mass they heat time to stabilise, then measure. Basking surface, cool end, and the air at the cool end. In an unfamiliar house you are checking not just that the basking spot is right but that the cool end is genuinely cooler and the room is not fighting the setup.

Verify the new room with an actual reading before the lizard goes back in. A different house heats differently, even with identical equipment.

Check the thermostat is controlling, not just powered. The display reading and a surface reading should agree with each other.

Reset the light timer to the same photoperiod the animal had before, adjusted for the new time zone if you have crossed one. Photoperiod is a strong seasonal signal for reptiles and an abrupt change to it is an unnecessary extra stressor on top of the move.

Only then put the lizard back in, at the cool end or in its hide, and leave it alone.

The first two weeks

Expect a quiet animal. Hiding more, basking less at first, and refusing food are the normal reptile response to a change of everything at once.

Do not handle for the first week beyond what is needed for health checks. Handling is a stressor and there is nothing to gain from it here.

Weigh weekly on the same scale and compare against the pre-move figure. Weight is the measurement that separates settling in from getting ill, because a settling lizard holds weight while an ill one loses it.

Keep water available and, for species that need it, keep up the usual misting or humidity routine. Dehydration is a genuine risk in a move because the animal often stops drinking as well as eating.

Reoffer food at the normal interval rather than escalating to tempting foods. Switching to treat items to break a fast usually teaches the animal to hold out for them.

Watch for the signs that are not stress. Open-mouth breathing, mucus or bubbles at the nostrils or mouth, a clicking or wheezing sound, swelling, tissue protruding from the vent, sudden weakness, or a burn mark are not settling behaviour and they need a vet.

Settled looks like this: moving between warm and cool areas, using both hides, and eating on the normal schedule again.

What never to do

Do not carry the lizard in its vivarium with the decor still inside. Slate, rock and wood shift, and animals are crushed by their own furniture.

Do not feed a large meal the day before a long journey.

Do not let the lizard roam the new house to explore. Unfamiliar rooms mean gaps behind appliances, cold voids, other pets and open doors.

Do not use hot water bottles, hand warmers or heat packs against the animal. Wrapped, outside the container, and out of reach is the only safe use.

Do not restart heating equipment you have not checked. A cracked ceramic emitter, a chafed cable or a thermostat probe that has come loose in transit is dangerous the moment it is switched on.

Do not decide the animal is ill on day three because it has not eaten. Verify temperatures, weigh it, and give it time before escalating.

Do not use the move as the moment to also change substrate, diet, lighting or enclosure size. Change one thing at a time so that if something goes wrong you can tell what caused it.

When to get help

Contact a reptile-experienced veterinarian the same day for open-mouth breathing, discharge or bubbles at the nose or mouth, any sound on breathing, a burn, tissue protruding from the vent, collapse, or an animal that stays limp after being warmed.

Book an appointment for weight loss that continues past the first fortnight, for an animal that never resumes normal basking behaviour, or for one that becomes lethargic in a correctly heated enclosure.

Take your records with you. Pre-move weight, current weight, verified basking and cool-end temperatures, the date the UVB lamp was last replaced, the last date the animal ate, and the journey details usually tell a vet more about what happened than the examination alone.