Skink or gecko is a type of REPTILE. They are small, four-legged creatures with scaly skin and long tails. Skinks and geckos are found in many parts of the world, including tropical and subtropical regions. They are usually nocturnal, meaning they are active at night. Skinks and geckos feed on insects, spiders, and other small invertebrates. They are also known for their ability to climb walls and ceilings.