My Reptile Isn't Moving Much — Should I Be Worried?

Chris Thomas

— 2 min read
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My Reptile Isn't Moving Much — Should I Be Worried?

Reptiles are naturally slower and more sedentary than mammals — but there's a big difference between a reptile resting and one that's unwell. Knowing which you're dealing with could be the difference between a routine check and a vet emergency.

First: Is It Actually a Problem? Many reptile owners panic unnecessarily about stillness. Before assuming something is wrong, consider:

  • Is your reptile in a shedding cycle? Many become reclusive and stop moving much during this time
  • Is it winter or a cooler season? Reptiles are ectotherms — their activity is directly tied to temperature
  • Have they recently eaten? After a large meal, snakes and lizards often remain still for days while digesting
  • Are they brumating? Some species (particularly tortoises and certain lizards) naturally enter a dormant state in colder months

When Lethargy IS a Warning Sign The difference between normal rest and illness is usually found in the combination of symptoms. Be concerned if you notice:

  • Lethargy alongside refusal to eat for more than 2 weeks (outside of shedding or brumation)
  • Laboured or open-mouth breathing
  • Discharge from the eyes, nose, or mouth
  • Swollen or discoloured limbs
  • Unusual body positioning — head tilting, twisting, or inability to right themselves
  • Significant weight loss
  • Sunken eyes (a sign of dehydration)

Common Causes of Lethargy in Reptiles

  • Incorrect temperatures — the most common cause; if the basking spot or ambient temperature is too low, your reptile simply can't function properly
  • Respiratory infection — especially common in bearded dragons and snakes
  • Parasites — internal parasites can cause weight loss and lethargy over time
  • Metabolic bone disease (MBD) — caused by insufficient UVB lighting or calcium deficiency, common in bearded dragons and geckos
  • Viral or bacterial infections — including inclusion body disease (IBD) in snakes

What to Check First

  1. Verify your temperatures with a reliable digital thermometer — not just the dial on your heat mat
  2. Check your UVB bulb — these degrade before they visibly stop working and should be replaced every 6–12 months
  3. Assess hydration — offer a lukewarm bath for 15–20 minutes
  4. Look for shed skin retained around the eyes or toes, which can restrict circulation

When to Call a Vet If your reptile hasn't eaten in over 3 weeks (outside of known brumation), has any of the symptoms above, or you simply can't identify the cause — see a reptile-specialist vet. General practice vets often have limited reptile experience, so seek out an exotic animal practice where possible.

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