Native to Southeast Asia, including Malaysia, Indonesia, and the Philippines. It is one of the largest gecko species, reaching up to 14 inches in length. This nocturnal and arboreal species exhibits a striking appearance with a robust body, large head, and variable colouration ranging from grey to brown, often with mottled patterns. Gekko smithii is known for its loud vocalisations. In captivity, they require a spacious, vertically oriented enclosure with plenty of climbing structures and hiding spots, and a diet of insects, small mammals, and fruit.