A crested gecko's teeth are tiny, and you will almost never spot a single damaged one. Early dental trouble is read instead from the shape of the closed mouth, the condition of the gum edges, and changes in how the gecko uses its tongue at meals. Because crested geckos are nocturnal and hide by day, these signs are easiest to catch during evening feeding, when the gecko is active and licking.
What a Troubled Mouth Looks Like
A healthy crested gecko mouth closes into a smooth, even curve. Early trouble can make that line look wavy, slightly open on one side, or uneven from the front, as though the jaw has shifted a fraction. Look for drool at the corners, red or swollen-looking gum margins, dark spots along the tooth line, or a small crusty patch the gecko keeps licking at. Some geckos hold the head tilted or rub the chin along cork bark and plant stems, behaviours that stand out in an animal that normally sits still and watches.
Eating and Tongue Cues at Mealtimes
Crested geckos lap soft diet with broad tongue strokes, so mouth pain often trims those strokes down. Watch for shorter licks, pauses mid-meal, head shaking after a mouthful, or food smeared around the lips because the tongue is not clearing it. With insects, a sore gecko may strike, hold briefly, and drop prey it would normally crunch down. A gradual fall in how much diet disappears from the cap overnight is worth recording, especially if the gecko still climbs eagerly to the feeding ledge, which points to willingness without comfort.
Jaw Softness Is a Wider Health Clue
In crested geckos, mouth problems can travel with jaw bones that feel less firm than they should, which is why a vet will look beyond the teeth themselves. Note whether the jaw seems flexible when the gecko chews, whether the tail base is thinning, and whether climbing grip and jumps look weaker than usual. Record what diet has actually been eaten, how insects are prepared before feeding, and the lighting schedule, because those husbandry details shape the questions a vet will ask. Photograph the gecko from above as well, since body condition is judged from the whole animal, not the mouth alone.
Checking Gently, and When to Escalate
Never pull a crested gecko's jaw open to inspect inside: the bones are small and a struggling gecko can drop its tail. Instead, film a normal feeding session, zoom in on stills afterwards, and compare this week's jaw line with last week's. Contact an exotics vet promptly for swelling, discharge, a jaw that stays open, bleeding, rapid weight loss, or a gecko that has stopped eating altogether. A mild change with normal appetite can be monitored for a few days, but visible jaw asymmetry should always be seen in person rather than watched indefinitely.
Keeping the Timeline Straight
Write down each observation with the food offered, how much was eaten, and which side of the mouth looked different. Add weight checks if you take them, and keep the front-on jaw photos in date order so progression is obvious at a glance. A vet reading that sequence can separate a one-off awkward shed or minor knock from a steady decline that needs intervention. Keeping the photos, diet notes, and appointment findings filed in KinsLe's Pet Passport turns scattered evening observations into a proper dental history for this gecko.