Leopard the 13th century AD, generally refers to the leopard, and less often to the cougar and the jaguar. Alternative origins suggested for "Panthera" include an Indo-Iranian word meaning "white-yellow" or "pale". In Sanskrit, this could have been derived from पाण्डर "pāṇḍara" ("tiger"), which in turn comes from पुण्डरीक "puṇḍárīka" (with the same meaning). The specific name "pardus" is derived from the Greek ("pardos") ("male panther"). The leopard is one of the five extant species of the genus "Panthera", which also includes the jaguar ("P. onca"), the lion ("P. leo"), the snow leopard ("P. uncia") and the tiger ("P. tigris"). This
Common leopard gecko exists in adult males and females, but can be difficult to determine in young geckos. The underside of a gecko truly determines the sex of the gecko. Males have pre-anal pores and hemipenal bulges while females have smaller pores and do not have external bulges. Males can determine the sex of other common leopard geckos by smelling pheromones on their skin. Males respond to males with aggressive behavior while they demonstrate courtship behavior towards females. Towards other males, the male would raise itself up from the ground, extend his limbs, and arch his back with the swelling of the tongue