Abstract
The reproductive biology of (reproductive behaviour, reproductive cycle and fat body cycle) Acanthodactylus schmidti was examined using specimens obtained from north of Riyadh, Saudi Arabia. Data for this research came both from ecological studies in the field and also histological examinations. The reproductive season (which coincided with the rainy season of the area) was found to commence in October–November and terminated in May. Young lizards were seen in the study area from as early as February and as late as June. There is evidence for the presence of multiple clutches (maximum of three) during each breeding season. It is concluded that the timing and length of the reproductive season and multiple clutches are an important adaptation for this species which inhabits desert regions with unpredictable weather conditions.