A gecko is a type of lizard belonging to the family Gekkonidae. They are small to medium-sized reptiles known for their unique adaptations, including the ability to climb smooth vertical surfaces and even move across ceilings due to their specialized toe pads. Geckos are found in a wide range of environments, including tropical and subtropical regions around the world. They exhibit diverse colors and patterns for camouflage and communication. Most species are nocturnal, employing their keen eyesight to hunt insects and other small prey at night. They also have a unique vocalization technique, using sounds for communication.