Uromastyx: the hidden risk of housing it with a bearded dragon
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
A bearded dragon in perfect health can carry a bacterium with no symptoms at all, while still passing it on to other lizards in the same collection. A study by Devloo, Martel, Hellebuyck, Vranckx, Haesebrouck and Pasmans, published in 2011 in the journal Veterinary Microbiology, followed a lizard collection where uromastyx kept developing recurring dermatitis and cheilitis, tracing the source of the Devriesea agamarum bacterium responsible. Find our other pointers in the care and grooming section.
Contents · 5 sections
The bearded dragon: a healthy carrier and a source of infection
The authors found the same Devriesea agamarum strain in perfectly healthy bearded dragons and in sick uromastyx from the same collection, confirming that the former acted as an asymptomatic reservoir for the latter.
A bacterium able to persist for years in a collection
The study notes that this bacterium can persist for several years within a lizard collection, triggering repeated dermatitis outbreaks in susceptible species even after treatment that appeared to clear visibly affected animals.
Why uromastyx is more vulnerable than bearded dragons
Some strains identified in the study were found only in sick uromastyx, never in bearded dragons, suggesting a species-specific susceptibility rather than simple exposure. Yet cohabitation, or even shared equipment between the two species, is enough to pass the bacterium along.
Practical pointers
- Don't house bearded dragons and uromastyx together, or on shared substrate.
- Keep separate equipment (bowls, décor, cleaning tools) for each species, even within the same room.
- Watch the mouth area (cheilitis) and skin of any uromastyx after contact with a bearded dragon.
- Strict quarantine for any new arrival before adding it to an existing collection.
This precaution builds on the basics already known about quarantine; our article on quarantining a new reptile covers the duration and setup needed. See also our bearded dragon profile for its full picture.
Frequently asked questions
Should a healthy carrier bearded dragon be treated?
The study doesn't cover a treatment protocol for the asymptomatic carrier; the most reliable precaution remains avoiding any direct or indirect contact with more susceptible species like uromastyx.
Does uromastyx dermatitis clear up for good after treatment?
The study reports cases where the bacterium persisted in the collection despite treatment that appeared to clear the affected animal, which is why extended monitoring after any outbreak is worthwhile.
Are species other than bearded dragons and uromastyx affected?
The study focuses on these two agamid species, but later work has found the same bacterium in other captive lizards, which is a reason for caution beyond this one pairing.
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This guide is part of Planète Pets’s Reptiles universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
