Rocking, threat-challenge, and fighting displays are restricted to males. Rocking involves rotating the head and shoulders in a forward, circular motion. When one male encounters another, it exhibits a threat-challenge display. Two fighting males will align side by side while facing in opposite directions. Each will then attempt to bite the other as they lash their tails and jump toward each other.
Females exhibit a rejection posture when a male attempts copulation.
With back arched, body inflated, limbs extended, and mouth open, she always faces the male or moves to orient herself laterally to the male. The former range of the blunt-nosed leopard lizard encompassed the floor of the San Joaquin Valley and Sierra foothills from Stanislaus County southward to the Tehachapi Mountains in Kern County. West of the San Joaquin Valley, the species occurred on the Kettleman and Carrizo Plains, and in the southeastern Cuyama Valley in San Luis Obispo, Santa Barbara, and Ventura counties. Loss of habitat to cultivation, petroleum and mineral extraction, ORV use, and construction of transportation, communications, and irrigation infrastructures has resulted in the endangerment of blunt-nosed leopard lizard populations. The main loss was due to farming.