In his 1955 book, Salamanders and other Wonders, science author Willy Ley determined that the Mkodo tribe, Carl Liche, and the Madagascar man-eating tree all appeared to be fabrications: “The facts are pretty clear by now. Of course the man eating tree does not exist. There is no such tribe.”
first google result
“man-eating” I thought that OP was asking if men eating plants was normal