Did you know mouth rot is a common occurrence in various types of reptiles including snakes, turtles and even lizards like the Crested Gecko? In general, mouth rot appears as inflammation or small hemorrhages on the gums or as large amounts of mucus in the mouth. It can also appear on the inside edge of the mouth near the lip area. Causes include stress, poorly regulated temperature in the enclosure, parasites, trauma, malnutrition, and overcrowding. If your gecko has mouth rot then you may notice a swelling in the mouth or head area. Your pet may also have his mouth open as if he is breathing through his mouth. Some Crested Geckos will stop eating when mouth rot occurs so you may also notice a dramatic weight loss due to lack of appetite. Call your vet Sugar Land, TX if your reptile has any of these symptoms.