Formosa Slug Snake (Pareas formosensis)

Scarcely longer than an earthworm, this juvenile slug-eating snake (Pareas formosensis) sleeps balanced on top of a fern frond. Many slug-eating snakes retain the unusual asymmetric dentition of their snail-eating ancestors, an adaptation for pulling snails out of their shells via a process known as ‘mandibular walking’. Thua Thien Hue, Vietnam.

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