Description: Gambelia wislizenii has granular dorsal scales that can be white, cream, or gray with irregular brown or dark gray spots along its body and head. Sometimes they have dark bars across their back. The tail also has dark bars across it. Juveniles have more highly contrasted markings compared to adults, often with rusty coloring on the back or bright red spots, and yellow on the thighs and under the tail.

The male and female are different in appearance. The female is about 5.8 inches snout-vent length, and the male is smaller, measuring about 4.8 inches SVL. Both sexes are capable of marked color changes. In its dark phase the lizard's spots are nearly hidden and light crossbars become quite obvious on both the body and the tail. In the light phase the opposite is true with the dominant color consisting of gray, pinkish, brown or yellowish brown hues. During the mating season females develop reddish orange spots and bars on their sides and underneath the tail when gravid. Males develop pink or rusty wash on the throat, chest, and sometimes the body, during the breeding season.

Habitat: The long-nosed leopard lizard prefers to inhabit arid and semiarid plains growth, like bunch grass, alkali bush, sagebrush, creosote bush, and other scattered low plants. The ground can be hardpan, sand, or even gravel with rocks that may often be used as basking sites. G. wislizenii prefers flat areas with open space for running, avoiding densely vegetated areas.

Range: It is found from near sea level to around 6,000 feet. Its range includes the western part of the United States from Oregon to Idaho in the north, south to northern Mexico in Baja California, Sonora, Coahuila, and Zacatecas and Casa Grande, Arizona. In San Diego County, it occurs east of the Peninsula Ranges within the Lower Colorado Desert. It is found in desert flats and lower foothills with little vegetation.

Found in these States: AZ | CA | CO | ID | NM | OR | TX | UT

Diet: The long-nosed leopard lizard preys on small lizards such as Aspidoscelis Costatus, in addition to insects and sometimes rodents, like all members of the family. This lizard also is cannibalistic, eating smaller leopard lizards when the opportunity arises. On occasion, it will eat the young leopard lizards as they hatch, but the adults are usually not active during the time period when most young hatch from their eggs. This allows the young time to grow and become more of a contender with the larger adults. Its long nose usually makes its jaw quicker and better for catching vertebrate prey. This species utilizes stalking and ambush techniques when hunting. As an ambush predator, it lies in wait in the shadows underneath a bush or small tree, where its spotted pattern blends, waiting for its prey to come within capture range. When prey is sufficiently close, it uses a rapid pouncing movement to capture the prey in its strong jaws. The long-nosed leopard lizard has been documented to jump up to two feet in any direction, including into the air, in order to catch prey.

Reproduction: The breeding season of G. wislizenii extends from May to June with a single clutch of 5–6 eggs being laid usually in June or July, which hatch in the late summer months of July or August. During mating no pair bond is formed between adults. A single clutch is usually laid per year but in the warmer climates towards the south, it is possible for a female to lay up to two clutches per year. Birthing and egg-laying occur in a burrow, although no nest structure is formed. Egg incubation is estimated to be between five and seven weeks. Young emerge in August, when adult activity is coming to an end. The timing of the juvenile emergence coinciding with the cessation of adult activity may aid in the prevention of cannibalism.

Status: Listed as Least Concern in view of the large and relatively stable range extent and area of occupancy, coupled with relatively high abundance and a lack of major threats.

Subspecies: None

Taxonomy: