What is the smallest salamander?



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    The smallest salamander is thought to be the Thorius arboreus. It is one of several species of the genus Thorius that are sexually mature at about 15 mm snout to tail. Thorius arboreus from the Sierra de Juarez of Oaxaca is the smallest species. The largest known adult is a female that was only 20.0 mm snout-tail length. Females are larger than the males in this genus.

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