Crested Gecko Not Eating?

Temperature is the #1 cause of appetite loss in crested geckos. Unlike species that stop eating when too cold, crested geckos stop eating when too hot. Heat stress suppresses appetite and can be fatal if not corrected.

• Verify ambient temperature is 72-78°F — use a digital thermometer
• Temperatures above 85°F cause appetite loss and heat stress
• Check if the enclosure is in direct sunlight or a hot room
• Cool the enclosure immediately if temperatures exceed 82°F
• Fix temperature before trying any other appetite-stimulation tricks

Not all appetite loss is cause for concern. Crested geckos naturally reduce feeding in several normal situations.

• Shedding: Refuse food 1-2 days before and during shed — completely normal
• Cooler months: Reduced metabolism leads to less frequent feeding
• New environment: Adjustment period of 1-2 weeks after rehoming is normal
• Adult fasting: Healthy adults can go weeks without eating — monitor weight, not just food intake
• Breeding season: Males may fast during breeding behavior

Fermented CGD is the #3 cause of appetite refusal. CGD breaks down within 24-48 hours at room temperature, developing an off smell and unpalatable taste that geckos will refuse even when hungry.

• Replace CGD every 24-48 hours without exception
• Clean the feeding dish when replacing food — residue accelerates fermentation
• Try a different CGD flavor — geckos can develop preferences or aversions
• Never offer CGD that smells sour or has been sitting for more than 48 hours

Most appetite loss resolves on its own within days to weeks. However, certain combinations of symptoms warrant immediate veterinary attention.

• Weight loss combined with prolonged fasting — weigh weekly to track trends
• Lethargy, weakness, or inability to cling to surfaces
• Visible discharge from mouth or nose
• Rapid weight loss in juveniles — they cannot fast as long as adults
• If no improvement after 2-3 weeks with corrected husbandry, consult a reptile vet

• Offer a different CGD flavor — variety can restart interest
• Try live insects (dubia roaches, crickets) to trigger hunting response
• Feed at night when crested geckos are naturally most active
• Minimize handling and disturbances to reduce stress
• Ensure the enclosure has proper vertical space, hides, and climbing structure