American legless lizard

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Anniella sp. distribution.png

American Legless Lizard refers to several species of lizards native to the Americas that have evolved to live without legs, resembling snakes in appearance. Despite their snake-like appearance, legless lizards are distinct from snakes in several anatomical and behavioral aspects. They belong to the family Anguidae, which includes both legless and legged species. The most well-known species within this group in the United States is the California Legless Lizard (Anniella pulchra).

Description[edit | edit source]

American Legless Lizards possess elongated bodies and reduced or absent limbs, adaptations that allow them to burrow through sand or leaf litter. Unlike snakes, they have eyelids and external ear openings. Their bodies are covered in smooth scales, and they can be distinguished by their ability to blink and their lack of forked tongues. These lizards typically have a blunt tail and a head that is not distinctly set off from the body, which helps in their burrowing lifestyle.

Habitat and Distribution[edit | edit source]

These lizards are found in various habitats across the Americas, from the United States to South America. They prefer sandy or loose soil environments where they can easily burrow. The California Legless Lizard, for example, is found in the sandy soils of California's coastal dunes and desert fringes.

Diet[edit | edit source]

The diet of American Legless Lizards primarily consists of small insects and other invertebrates. Their burrowing lifestyle allows them to access a variety of prey items that live beneath the surface of the soil.

Reproduction[edit | edit source]

Reproduction among these lizards varies by species, but many are oviparous, laying eggs that hatch into fully formed juveniles. Some species exhibit ovoviviparity, where the eggs hatch inside the female's body, and she gives birth to live young.

Conservation Status[edit | edit source]

The conservation status of American Legless Lizards varies by species and location. Habitat destruction and fragmentation are significant threats to their populations. Conservation efforts are focused on habitat preservation and research to better understand their ecological needs.

See Also[edit | edit source]

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Contributors: Prab R. Tumpati, MD