Reptile Belly Hard and Not Passing Stool? How to Check for Impaction
Impaction is a blockage of the gut caused by indigestible substrate (sand, gravel, etc.), feeders that are too large, or poor digestion from low enclosure temperature. Left untreated, it can require surgery — it's one of the most common reptile emergencies.
Why it happens
- Swallowing loose substrate like sand or pellets along with food
- Feeder size larger than the width of the animal's head
- Low enclosure temperature reducing digestive function
- Chronic dehydration causing gut contents to harden
What to check
- The belly feels harder and more swollen than usual
- No bowel movement for several days
- Loss of appetite and lethargy
- Straining in a defecation posture but nothing comes out
What you can check and do at home
- Warm-water soak: soaking in lukewarm water around 30°C can help encourage a bowel movement in mild cases.
- Swap the substrate right away: switch any substrate with an ingestion risk to something digestible or with no swallowing risk, like paper towel.
- Recheck enclosure temperature: confirm it hasn't drifted outside the proper range for the species.
When to see a vet
If a soak and temperature adjustment for a few days (2-3) still produce no bowel movement, or the belly stays hard, go to the vet right away. An X-ray is needed to confirm whether there's a blockage and where it is before proper treatment can happen.
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