Why Is My Crested Gecko Not Eating?
Feeding refusal is one of the most common concerns among crested gecko keepers, and in most cases it has a straightforward explanation. Crested geckos are naturally secretive feeders — they often eat at night when you're not watching, and they can go surprisingly long periods without eating without it being a health emergency. That said, persistent refusal combined with weight loss is always worth investigating.
Common Reasons Crested Geckos Stop Eating
1. New Environment / Stress
The most common reason a newly acquired crested gecko won't eat. Give a new gecko at least 2 weeks of minimal disturbance before worrying about feeding refusal. Offer CGD every other day and leave the gecko alone as much as possible during this period.
2. Temperature Too High or Too Low
Temperatures above 80–82°F suppress appetite and cause heat stress. Temperatures consistently below 65°F slow metabolism and reduce feeding drive. Verify enclosure temperatures with a reliable thermometer before assuming a feeding problem.
3. CGD Brand or Flavor Refusal
Crested geckos can be particular about their CGD. Try a different brand or flavor — rotating between Repashy, Pangea, and similar quality brands is a common solution. Ensure the CGD is mixed to the correct consistency: too thick or too watery can cause refusal.
4. Shedding
Crested geckos commonly reduce or stop eating in the days before and during a shed. This is completely normal. Once the shed is complete, appetite typically returns.
5. Seasonal / Hormonal Changes
Adult crested geckos — particularly females — may reduce feeding during breeding season or when gravid (carrying eggs). This is normal behavior and usually resolves on its own. Monitor weight to ensure the gecko isn't losing condition.
6. Overhandling or Stress
Crested geckos that are handled too frequently or kept in a high-traffic area may become chronically stressed and reduce feeding. Limit handling to short sessions a few times per week and ensure the enclosure has adequate hides.
7. Illness or Parasites
Persistent feeding refusal accompanied by weight loss, lethargy, abnormal droppings, or other symptoms may indicate illness or a parasite load. If husbandry is correct and the gecko continues to lose weight, a reptile veterinarian should examine it.
How to Tell If It's Serious
Short-term feeding refusal — a few days to a couple of weeks — is rarely an emergency in an otherwise healthy crested gecko. The key indicator is body weight. Weigh your gecko monthly using a digital kitchen scale. A gecko that is consistently losing weight despite food being offered needs veterinary attention.
Quick Checklist
- Verify daytime temperatures are 72–78°F and not exceeding 80–82°F.
- Check whether the gecko is in shed or recently shed.
- Confirm CGD is fresh, correctly mixed, and offered at night.
- Try a different CGD brand or flavor.
- Check that fresh water is available and the enclosure is being misted appropriately.
- Reduce handling and minimize disturbance for 1–2 weeks.
- Weigh the gecko and track weight weekly.
- Check for other symptoms: lethargy, abnormal droppings, weight loss, discharge.
- If weight loss continues or other symptoms appear, consult a reptile veterinarian.
What Not to Do
- Don't force-feed — this causes significant stress and can injure the gecko.
- Don't assume the gecko isn't eating just because you haven't seen it eat — crested geckos feed at night.
- Don't switch foods repeatedly in a short period — this can increase stress and confusion.
- Don't ignore persistent weight loss alongside feeding refusal.
FAQ
My crested gecko licks its CGD but the bowl still looks full. Is it eating?
Probably. Crested geckos consume surprisingly small amounts of CGD in a single feeding. Look for small tongue marks, slight disturbances in the food, and monitor body weight over time rather than expecting the bowl to be noticeably empty.
How long can a crested gecko go without eating?
A healthy adult crested gecko can go 2–3 weeks without eating without it being an immediate emergency, provided it is maintaining body weight and showing no other symptoms. Juveniles have less reserve and should be monitored more closely.
My crested gecko only eats live insects and won't touch CGD — is that okay?
Short-term, yes. Long-term, a diet of live insects alone without a quality CGD is nutritionally incomplete for crested geckos. Continue offering CGD alongside live feeders and try different brands or flavors to find one the gecko accepts.
My crested gecko ate well for months and suddenly stopped — what happened?
Sudden feeding refusal in a previously healthy gecko is most commonly linked to seasonal or hormonal changes, a recent environmental change, or the onset of a shed cycle. Work through the checklist above. If no obvious cause is found and the gecko is losing weight, consult a reptile veterinarian.
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