Tarentola mauritanica, known as the common wall gecko, is a species of gecko (Gekkota) native to the western Mediterranean area of North Africa and Europe. It has been introduced to Madeira and Balearic Islands, and the Americas (in Montevideo, Buenos Aires and California). A nocturnal animal with a predominantly insectivorous diet, it is commonly observed on walls in urban environments in warm coastal areas; it can be found further inland, especially in Spain where it has a tradition of cohabitation with humans as an insect hunter. A robust species, up to 15 centimetres (5.9 in) long, its tubercules are enlarged and give the species a spiny armoured appearance.
The species was first described by Carl Linnaeus in 1758. It is also known as moorish gecko, crocodile gecko, European common gecko, and, regionally, as osga (in Portuguese), salamanquesa (in Spanish) and dragó (in Catalan).
Adults can measure up to 15 centimetres (5.9 in), tail included. Robust body and flat head. Back, legs and tail with prominent conic tubercles. Its regenerated tail is smoother and doesn't have tubercles. Obtuse mouth, big eyes with no eyelids and vertical pupil. Fingers with big lateral growths and adherent division less laminae in the bottom face. Only the third and fourth fingers end in union. Brownish grey or brown coloration with darker or lighter spots. These colours change in intensity according to the light. When they are active by day their colour is darker than during the night. It can be found on many construction sites, ruins, rock fields, tree trunks, etc.
