Pseudopus apodus

The Sheltopusik: A Legless Lizard of Eurasia

The sheltopusik, scientifically classified as Pseudopus apodus, is a remarkable species of large glass lizard native to a broad geographic range spanning Southern Europe to Central Asia. This legless reptile, also commonly known as Pallas's glass lizard or the European legless lizard, can reach impressive lengths of up to 135 cm (4.43 ft). Its appearance is distinctive, characterized by a tan coloration that is paler on its underside and head, giving it a segmented or earthworm-like look. A notable feature is a lateral groove running down each side of its body. Although it is legless, it can be readily distinguished from snakes by the presence of visible ears and eyelids.

Habitat and Behavior

Pseudopus apodus thrives in open country environments, showing a preference for short grasslands and hills with sparse tree cover. These lizards are often found in microhabitats offering a mix of sun and shade. While they prefer drier conditions, they exhibit increased activity during wet weather, particularly when hunting their favorite prey: snails and slugs. Their dentition and jaw structure are well-adapted for breaking through the shells of these mollusks. The sheltopusik's diet also includes other arthropods and small mammals.

Defense Mechanisms and Reproduction

When threatened, the sheltopusik employs a series of defensive tactics, including hissing, biting, and releasing a musk. It is also known for its ability to shed its tail, a phenomenon known as caudal autotomy, which gives rise to the common name "glass lizard." This tail, when detached, may break into pieces, fueling a myth that the lizard can shatter and reassemble. In reality, the tail regrows, though it is typically shorter and darker initially. Females lay approximately eight eggs about 10 weeks after mating, hiding them under bark or stones and sometimes guarding them. The young hatch after 45 to 55 days and are typically around 15 cm (5.9 in) long upon emergence.

Human Interaction and Captivity

Historical evidence suggests that the Levant subspecies (P. a. levantinus) was consumed by humans in ancient times. In modern times, the sheltopusik is sometimes found in the exotic pet trade, though captive breeding is rare. They are known to adapt well to captivity, feeding on a variety of prey including crickets, mealworms, small mice, eggs, snails, and meat. While they generally do not tolerate extensive handling, they can become accustomed to keepers. Sheltopusiks are considered hardy captives, with lifespans recorded up to 50 years.