Aspidoscelis tigris
Tiger Whiptail

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Other Names: Western Whiptail
Subspecies: Sonoran Tiger Whiptail Aspidoscelis tigris punctilineata has a darkly pigmented throat and chest that are uniformly black in large males, and light spots are usually present dorsally among the 4 stripes
Plateau Tiger Whiptail Aspidoscelis tigris sepetentrionalis generally lacks ventral pigment (some have flecks on the throat, some considerable spotting), and the stripes and especially the hindquarters are often yellow-orange, producing a striking appearance that matches the red sandy substrate where they occur.
Description: A medium-sized (up to 110 mm or 4.3" from snout to vent), slim, orange-brown to gray-brown lizard with a long, thin tail, and a slim, pointed snout. The body is marked with dark reticulations or marbling, light spots, and faint, light stripes. The reticulations are dark gray or black on the anterior portion of the sides. The tail is brown. Males have dark gray or black coloration on the chest and throat. Juveniles have a plain pale underside, distinct stripes, spots on the body and limbs, and a bright blue tail. As the animal ages the tail becomes brown, the stripes fade, and the spots often merge together into reticulations. The scales on the body are small and granular. The scales on the tail are large, keeled, and rectangular. The belly scales are large, smooth, and rectangular and the scales on top of the head are large, smooth, and plate-like.
Venom: None
Habitat: This lizard occupies a wide variety of terrain types including sandy flatlands, plateaus, rocky bajadas, drainages, canyons, and steep mountain slopes. It is usually found in relatively open and sunny areas.
Behavior: This is an alert, fast-moving, ground-dweller that actively forages during the day. It spends nearly all of its waking hours in motion foraging and moving between sun and shade for thermoregulation. This wary lizard can be difficult to capture. It is usually very conscious of its proximity to the pursuer and is careful to stay just out of reach.
Hibernation: It hibernates during the cold months of fall and winter. Young usually emerge from hibernation in March (about a month before adults) and remain active through October (about a month later than adults).
Reproduction: The Tiger Whiptail mates in in spring and lays one or two clutches of eggs in late spring or summer. Clutch size ranges from 1 to 10 eggs.
Diet: It actively forages by rooting around in organic matter under bushes and by digging in the soil around the bases of rocks, logs, and other surface debris. It feeds on termites, insect larvae, beetles, grasshoppers, butterflies, moths, and other insects.
Adapted from account on