The single thing that kills captive uromastyx is humidity. Everything else — the diet, the lighting, the enclosure size — matters, but keepers who lose one have almost always kept it in conditions that would suit a leopard gecko: too damp, not hot enough where it counts, and fed the wrong food.
Quick answer
- Basking surface temperature of roughly 120–130°F, with a cool end in the low 80s. This is a desert lizard from the Sahara.
- Low humidity, dry substrate, excellent ventilation.
- Strong UVB. They are diurnal baskers and they need it.
- A plant diet. Adults should not be fed animal protein.
- Long-lived — well over a decade, often much more.
- Uromastyx geyri is CITES Appendix II, like the whole genus.
Heat: surface temperature, not air temperature
This is the number most people get wrong, because a thermometer stuck to the glass tells you almost nothing useful. A uromastyx thermoregulates by pressing its belly against hot rock. What matters is the temperature of the surface it is lying on, measured with an infrared gun pointed at the basking spot.
Aim for a basking surface around 120–130°F under the lamp, a warm zone in the 90s, and a genuine cool end in the low 80s so the animal can get away from the heat. A big temperature gradient across the enclosure is not optional; it is the whole mechanism by which the lizard regulates itself. Night-time can drop back safely.
Use a flat stone or tile under the basking lamp so there is real thermal mass to warm up. A basking bulb over bare substrate gives you hot air and a cold lizard.
Humidity, and why damp is the enemy
These animals evolved in arid North Africa and they are adapted to shed moisture, not conserve it. Sustained high humidity in a poorly ventilated enclosure leads to respiratory infection, and it is the most common way a healthy uromastyx becomes a sick one.
Keep the substrate dry, ventilate well, and do not mist. A shallow water dish is fine but not essential — most of their water comes from food, and many keepers offer water only occasionally rather than standing.
Diet
| Feed | Why | |
|---|---|---|
| Daily base | Dark leafy greens — endive, escarole, dandelion, spring greens, collard, mustard | Bulk of the diet, high calcium, low oxalate |
| Regular | Dry lentils, split peas and similar legumes; small amounts of seed | Plant protein, which is what they are built for |
| Occasional | Squash, bell pepper, other vegetables | Variety |
| Rarely or never | Fruit | Sugar load their gut is not designed for |
| Never (adults) | Insects and other animal protein | A herbivore’s kidneys handle it badly over time |
Supplement greens with calcium. The combination of strong UVB, a calcium-rich plant diet and high basking temperatures is what keeps the skeleton sound over a fifteen-year animal.
Enclosure
Floor space over height — they are terrestrial and they run. An adult wants a long enclosure with a hot end, a cool end, and enough furniture to hide under at both. Provide a hide at the warm end as well as the cool one, or the animal will be forced to choose between security and temperature.
Substrate is a long-running argument in the hobby. The practical position: use something dry and diggable, keep the enclosure dry, and make sure feeding does not involve the animal picking food up off loose substrate. Tile or a firm sand/soil mix under the basking area sidesteps most of the risk.
CITES, and what it means for you
The genus Uromastyx is listed on CITES Appendix II, which regulates international trade. It does not restrict ordinary keeping or domestic sale in the US, but it is the reason paperwork exists behind the animal, and it is part of why we state provenance on every listing. Our Red Uromastyx (Uromastyx geyri) is listed as farm bred, and we say so rather than rounding it up to captive bred — the reasoning is set out in about Terrarium Station and, at more length, in why provenance changes the animal.
For the group as a whole, see lizards for sale and what do lizards eat. Everything ships under our live arrival guarantee.
Common questions
What temperature does a uromastyx need?
A basking surface of roughly 120–130°F measured with an infrared thermometer, a warm zone in the 90s, and a cool end in the low 80s. Air temperature alone is not a useful measure for this species.
Can uromastyx eat insects?
Adults should not be fed animal protein. They are herbivores, and a long-term insect diet is associated with kidney problems. Plant protein from legumes covers what they need.
Do uromastyx need UVB?
Yes. They are diurnal desert baskers with high UV exposure in the wild, and strong UVB is necessary alongside dietary calcium for normal bone development.
What humidity do uromastyx need?
Low. Keep the substrate dry, ventilate well and do not mist. Sustained damp is the most common cause of respiratory infection in captive uromastyx.
How long do uromastyx live?
Well over a decade with correct husbandry, and often considerably longer. This is a long-term commitment rather than a starter animal.