From the Xanth series by Piers Anthony, the Naga undoubtedly are a race of human-headed serpents that may transform amongst totally human and serpent types, including any species and measurement of snake. Early depictions of circa-ninth-century Central Java intently resembled Indic nāga which was depending on imagery of cobras. https://andersonankzk.bloggazza.com/27840953/a-simple-key-for-23naga-unveiled