Hoop snake variant, possibly witch- or vampire-related?
I remember reading a summary of a legend about a snake-like mythological creature similar to a hoop snake or ouroboros which would sometimes feed by suckling the breasts of a young mother. The snake-thing would put its tail into the mouth of the woman's infant so that she wouldn't notice its crying. Thus, the snake drinks milk and the baby starves. It's similar to the milk snake legend about drinking milk from cows, but this specific creature is cited as intelligent and preying on humans.
I have a vague idea that this creature is related either to witches or vampires, but I'm not entirely certain, and I could be wrong about it being a hoop snake variant. I've read a lot of material about cryptids and mythological creatures, so I could be mixing things up.
Basically, I'm trying to find a name and a more detailed account of the milk-drinking snake-creature.
Various searches have mostly turned up information about normal milk snakes, which isn't helpful. If someone can give me a name for this creature or at least point out which country/culture the legend likely came from, I would appreciate it.
I have a vague idea that this creature is related either to witches or vampires, but I'm not entirely certain, and I could be wrong about it being a hoop snake variant. I've read a lot of material about cryptids and mythological creatures, so I could be mixing things up.
Basically, I'm trying to find a name and a more detailed account of the milk-drinking snake-creature.
Various searches have mostly turned up information about normal milk snakes, which isn't helpful. If someone can give me a name for this creature or at least point out which country/culture the legend likely came from, I would appreciate it.