Buddhist nagas.

The Buddhist nāga generally has the form of a large cobra-like snake, usually with a single head but sometimes with many. At least some of the nāgas are capable of using magic powers to transform themselves into a human semblance. In Buddhist painting, the nāga is sometimes portrayed as a human being with a snake or dragon extending over his head. One nāga, in human form, attempted to become a monk; when telling it that such ordination was impossible, the Buddha told it how to ensure that it would be reborn a man, able to become a monk.