13, see text Ptyas is a genus of colubrid snakes.

[1] This genus is one of several colubrid genera colloquially called "rat snakes" or "ratsnakes".

The generic name derives from Ancient Greek πτυάς, meaning "spitter", which referred to a kind of snake believed to spit venom in the eyes of humans, although in reality none of the Ptyas are known to spit venom.

[2][3] 13 species are recognized:[1]

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