Geckos come in a variety of sizes and colors and are found in habitats ranging from arid deserts to humid tropical forests. Many are known for their ability to effortlessly climb vertical surfaces. They do this with the help of specialized toe pads. Well-known species, such as day geckos (Phelsuma spp.), tokay geckos (Gekko gecko) and New Caledonian crested geckos (Rhacodactylus ciliatus), all share this trait. Others, such as the terrestrial leopard gecko (Eublepharis macularius), one of the most commonly kept species, lack this ability.
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