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We studied the long-nosed leopard lizard, Gambelia wislizenii, in the Great Basin Desert of southeastern Oregon to identify intraspecific patterns of behavioral variation. Sex and body size played an important role in determining intraspecific behavioral differences. Males and females showed different habitat preferences, with males spending more time on hardpan and in the center of shrubs. Males made more long moves and clustered their long moves more frequently than females. Smaller lizards displayed more head turns, tongue flicks, and use of elevated perches. Smaller individuals also spent a higher proportion of time moving.