A gecko is a type of lizard that belongs to the Gekkonidae family. Geckos are found in warm climates throughout the world, including tropical and subtropical regions. They are known for their distinctive appearance, which includes a flattened body, a large head, and large, bulging eyes.

Geckos are known for their ability to climb vertical surfaces and even walk upside down on ceilings. They accomplish this feat thanks to their specialized toe pads, which are covered in microscopic hairs that create a type of adhesive force, allowing them to cling to surfaces.

There are over 1,500 different species of gecko, ranging in size from just a few centimeters to over 30 centimeters long. Some geckos are kept as pets, and they are also used in research to study a variety of topics, including physiology, biomechanics, and ecology.