Bearded dragon poop can tell you a lot about their health — and runny, watery poop (diarrhea) is a sign that something is off. Sometimes it’s a simple diet issue; other times it points to parasites or infection.
This guide covers the most common causes of bearded dragon diarrhea and how to fix each one.
Common Causes of Diarrhea
1. Diet Issues (Most Common)
- Too much fruit or watery vegetables: cucumber, watermelon, and lots of fruit are high in water and sugar — too much causes loose stool.
- Sudden diet changes: a fast switch can upset their stomach.
- Fix: cut back on fruit and watery veg; stick to leafy greens as the base.
2. Parasites
- Internal parasites (like coccidia or pinworms) are common in bearded dragons and often cause smelly, runny poop.
- Fix: a vet can run a fecal test and prescribe the right medication.
3. Bacterial Infection
- Foul-smelling, watery stool can indicate a bacterial overgrowth or infection.
- Fix: see a reptile vet — this usually needs treatment.
4. Improper Temperatures
- If the enclosure is too cool, digestion slows and food passes through undigested.
- Fix: verify the basking spot is 95–110°F with an infrared gun.
5. Stress
- A new home, over-handling, or another pet can cause temporary stress diarrhea.
- Fix: give them space and a consistent routine.
When to See a Vet
- Diarrhea lasting more than 2–3 days
- Blood in the stool, or a very foul smell
- Lethargy, weight loss, or loss of appetite
- A baby with diarrhea (they dehydrate quickly)
What to Do at Home
- Simplify the diet — leafy greens only, no fruit or watery veg for a few days.
- Check temperatures and fix if too cool.
- Keep fresh water available (diarrhea causes dehydration).
- Collect a fresh poop sample for a vet fecal test if it doesn’t improve.
Disclaimer: This guide is for general education and does not replace professional veterinary advice. Persistent diarrhea can dehydrate your bearded dragon — contact a qualified reptile veterinarian if it continues.