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Apr 19, 2012

Uta stansburiana

Side-blotched lizards are variable in color and pattern, being spotted, blotched, or unpatterned, depending on location. The scales along the middle of the back are of uniform size. Each side of chest has a dark blotch (a large blue-black streak is present in some males). The throat of adults is blue, with an orange rim in some regions (colors less intense in late summer). At least one scale on ...
Apr 19, 2012

Sceloporus occidentalis

The scales on the back are fairly large, keeled, and pointed. Coloration is highly variable, but often the back is gray, brown, or black, with a series of wavy dark and light bands across the back or a row of somewhat V-shaped dark blotches along each side of the back. ; rear of thigh yellow or orange; scales on rear of thigh mostly keeled; up to 3.9 inches (9.9 cm) snout-vent length. Breeding m...
Apr 19, 2012

Thamnophis sirtalis

of Texas-Oklahoma), 7 scales on each upper lip, 1 preocular (scale in front of eye), 3 postoculars (scales behind eye), keeled scales on the back, and an undivided anal scale (covers vent). Adult total length is usually 16-26 inches (41-66 cm), with the maximum around 52 inches) (131 cm). Newborns are around 5-7 inches (12-23 cm) in total length (Conant and Collins 1991, Smith and Brodie 1982). ...
Apr 19, 2012

Thamnophis elegans

Pale (but not white) stripes on sides of body on second and third scale rows above lateral edges of belly scales; middorsal stripe bright and extends length of body in some areas, stripe dull and fades at midbody in other areas; often two large blackish marks on neck; often irregular black marks on belly; usually eight upper labials on each side of head; narrow dark marks (if any) on upper lips ...
Apr 19, 2012

Coluber constrictor

Upper surface of adults varies from black (e.g., northeastern U.S) to plain brown or olive (most of western and central U.S.), with a spattering of white, yellowish, buff, or pale blue in some parts of the south-central United States; upper scales smooth (unkeeled); belly black (e.g., northeastern U.S.) to plain yellow or cream (western and central U.S.); eyes large; anal scale divided; nostril ...
Apr 19, 2012

Crotalus oreganus

Western rattlesnakes have a horny rattle or button on the end of the tail, numerous small scales on the top of the head, a head that is much broader than the neck; and an infrared sensing pit on each side of the face between (but lower than) the eye and nostril. Coloration is highly variable, ranging from light tan or pink to black, usually with large blotches along the back and sides and bands ...