African Fat-Tailed Gecko Not Eating
An African Fat-Tailed Gecko that stops eating is one of the most common concerns new keepers have — and in the vast majority of cases, it is completely normal. AFTs are hardy geckos with significant fat reserves stored in their tails, and short-term feeding refusals are rarely a sign of serious illness.
This guide walks through the most common causes in the order you should check them, plus a quick troubleshooting checklist and guidance on when to contact a vet.
For full care context, see the African Fat-Tailed Gecko Care Guide.
Quick Troubleshooting Checklist
Before assuming illness, work through this checklist:
- ☐ Is the gecko in pre-shed? (Look for dull, milky coloration)
- ☐ Is the warm side surface temp 88–92°F?
- ☐ Has the gecko been handled recently or moved to a new enclosure?
- ☐ Is the gecko a gravid female?
- ☐ Has the prey type or size changed recently?
- ☐ Does the gecko have a thick, well-filled tail? (May simply not be hungry)
- ☐ Is the enclosure humidity between 50–70%?
- ☐ Are uneaten insects being removed promptly?
If you can check off all of the above without finding an issue, the refusal is most likely temporary. Monitor body condition and try again in a few days.
Most Common Causes
1. Upcoming Shed
Appetite typically drops 3–7 days before a shed and may not return until 1–2 days after the shed is complete. This is the single most common reason for a feeding refusal in an otherwise healthy gecko.
Signs of an upcoming shed: dull, grayish coloration; milky or cloudy eyes; increased time in the humid hide. Do not handle during this period. Wait until the shed is complete, then offer food again.
For a full guide to the shedding process, see the African Fat-Tailed Gecko Shedding Guide.
2. Incorrect Temperatures
A gecko that cannot reach an appropriate warm side temperature cannot thermoregulate or digest food properly. This is one of the most common husbandry-related causes of feeding refusals.
- Warm side surface: 88–92°F
- Cool side: 72–76°F
Use a temperature gun or digital probe thermometer to verify — not a stick-on dial. See the Best Temperature Guns for Reptiles and Best Thermometers for Reptiles.
3. Stress from New Environment or Handling
A newly acquired gecko may refuse food for 1–3 weeks while acclimating to its new enclosure. This is normal. Do not handle during this period — give the gecko time to settle.
Similarly, excessive handling, enclosure rearrangements, or nearby disturbances (loud noise, vibration, other pets) can suppress appetite temporarily.
4. Breeding Season / Gravid Female
Adult females may significantly reduce or stop eating when gravid (carrying eggs). This can last several weeks. A gravid female will often appear restless, dig at the substrate, and spend more time on the warm side. Provide a laying box with moist substrate if breeding is occurring.
5. Prey Boredom or Prey Issues
- Prey too large: Prey wider than the space between the gecko's eyes can cause refusal or regurgitation
- Prey too cold: Cool insects are less active and may not trigger a feeding response. Allow refrigerated feeder insects to reach room temperature before offering them.
- Prey boredom: A gecko fed exclusively one prey type may refuse it; try switching between crickets, dubias, and BSFL
- Prey not moving: Use feeding tongs to animate prey and trigger the strike response
See the Best Feeding Tongs for Reptiles.
6. Overfeeding
African Fat-Tailed Geckos store fat in their tails. A gecko with a very thick, well-filled tail may simply not be hungry. Weight loss is more important than the number of days since the last meal. If your gecko looks healthy and is maintaining body condition, a short fast is not a concern.
7. Low Humidity
AFTs kept at chronically low humidity (below 40%) can become uncomfortable and stressed, which suppresses appetite. Check ambient humidity with a digital hygrometer and ensure the humid hide is always damp. See the Heating and Humidity Guide and the Best Reptile Hygrometers.
8. Uneaten Insects Left in the Enclosure
Crickets left overnight will bite and stress your gecko. A stressed gecko won't eat. Always remove uneaten insects within 15–20 minutes of a feeding session.
How to Get an African Fat-Tailed Gecko Eating Again
- Verify temperatures — check warm side surface with a temperature gun
- Check for shed — if in pre-shed, wait it out
- Reduce handling — give the gecko 5–7 days of no contact
- Try a different prey type — switch from crickets to dubias or BSFL
- Warm the prey — allow insects to reach room temperature before offering
- Feed at dusk — AFTs are crepuscular; evening feeding gets the best response
- Try a separate feeding tub — a plain tub with no substrate can reduce distraction and trigger feeding
- Scent the prey — rubbing prey on a shed skin or a different feeder can stimulate interest
When to See a Vet
Contact a reptile vet if your AFT:
- Has not eaten in more than 4–6 weeks and is losing visible body condition
- Has a noticeably thin tail (significant fat loss)
- Shows other symptoms: lethargy, labored breathing, discharge from the mouth or nose, swollen limbs, or retained shed
- Has regurgitated multiple times
Weight loss is more important than the number of days since the last meal. A gecko maintaining body condition through a 3–4 week fast is far less concerning than one losing weight after 10 days.
FAQs
My AFT hasn't eaten in two weeks. Should I be worried?
Not necessarily. Two weeks is within the normal range for a healthy adult AFT, especially during a shed cycle, seasonal change, or breeding season. Check body condition — if the tail is still thick and the gecko is active, monitor and try again. If the tail is thinning or the gecko seems lethargic, consult a vet.
My AFT ate the insect but then spit it out. What does that mean?
Usually the prey is too large, too cold, or the gecko is in pre-shed. Check prey size against the eye-width rule, warm the insects to room temperature, and look for signs of an upcoming shed.
My new AFT hasn't eaten since I brought it home. Is that normal?
Yes, very common. New geckos often refuse food for 1–3 weeks while acclimating. Keep the enclosure quiet, avoid handling, maintain correct temperatures and humidity, and offer food every 3–4 days. Most geckos settle in and begin eating within 2–3 weeks.
Can stress cause long-term feeding refusals in AFTs?
Yes. Chronic stress — from excessive handling, an enclosure that's too small, inadequate hides, or persistent disturbances — can suppress appetite for extended periods. Ensure the gecko has at least three hides (warm dry, cool dry, warm humid) and is not being handled more than a few times per week.