I remember hearing through the valleys of Tuy, a town in Venezuela, that there was a woman who became an anaconda. Also in some soap operas, such as the Brazilian Pantanal and the Venezuelan Kaína, the transformation of people into animals was considered. I think these things are legends and maybe some people can have animal traits, like some kind of deformity or things like that, but from there to transform, I'm incredulous. I liked reading this post. Very interesting.