 It dwells in rock crevices and eats insects.The scientific name, "Xenosaurus grandis", comes from the Greek words "xenos", meaning “alien”, “stranger”, or “foreigner”, "saurus", meaning “lizard”, and "grandis", meaning “grand” or “great”.Its common name, “knob-scaled lizard”, refers to the bumpy, “knob-like” scales found on the upper portion of its body.