Gecko, any of more than 400 species of small harmless lizards found in warm climates. The gecko's name is derived from the sound of the cry of one species. Geckos are most numerous in southeastern Asia, Africa, and Australia. The largest gecko is the tokay of Malaysia, 10 to 14 inches (25 to 36 cm) long. Two geckos, both about 4 inches (10 cm) long, are native to the southwestern United States—the banded gecko (brownish with yellow bands) and the leaffingered gecko.With Geckos, we all have seen the comercials and thought that they were very cute. Geckos are small to average sized lizards belonging to the family Gekkonidae, which are found in warm climates throughout the world. Geckos are unique among lizards in their vocalizations, making chirping sounds in social interactions with other geckos. There are 1,196 different species of geckos.
Most geckos have no eyelids and instead have a transparent membrane which they lick to clean. Many species will, in defense, expel a foul-smelling material and faeces onto their aggressors. Many species have specialized toe pads that enable them to climb smooth and vertical surfaces and even cross indoor ceilings with ease. These antics are well-known to people who live in warm regions of the world, where several species of geckos make their home inside human habitations. These species (for example the House Gecko) become part of the indoor menagerie and are often welcome guests, as they feed on insects, including mosquitoes. The gecko's tapering head and short, flat body are covered with tiny scales that give the skin a soft appearance. Many species have brittle tails that break off easily. The leaf-fingered gecko is among the many species that have clinging pads at the tips of their toes, enabling them to run on walls and ceilings. Geckos move about only at night, feeding mainly on insects.
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