Caecilians are among the least known yet most intriguing vertebrates on Earth. Belonging to the order Gymnophiona, they represent one of the three major groups of amphibians, alongside frogs (Anura) and salamanders (Caudata). Unlike their more familiar cousins, caecilians are limbless, elongated animals with a worm- or snake-like appearance. Their smooth, segmented skin gives them a distinctive resemblance to earthworms, which often leads to misidentification.
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