I was editing the animals tag today, and I needed an explanation for why wendigo is on topic, but chupacabra is not.
(I love chupacabras and even wrote a book about them, but the legend only seems to be a of couple decades old, thus while it is folklore, it may not be said to be traditional until everyone who was alive when the first National Enquirer story is no longer living.)
Essentially, a practice or belief does not become traditional until the originators have passed into memory, which is to day it has passed from living memory.
