Weasels

In English, the word weasel denotes a group of mammals, some of which are known in the genus of mustela. In older times, the word weasel was applied to what we now denote as the least weasel, in contrast to other mustelids where English developed which were given other names: ermine and stoat which was both applied to the short-tailed weasel; the mink; the polecat; and the ferret. This means that back in the day English-speakers felt that there were many differences between each of these animals, and they weren't really the same in nature. These days the word has been added to other mustelids' names to denote them as looking and acting similar to least weasels, thus turning the word weasel into a word for many animal species rather than just one.

Religion & Impact
For less generic examples, such as local communities that live around one or a few species of weasel, please figure out which weasel lived in that area, then check that/those species' page(s).

Modern Eurmerica: These days weasels are portrayed as sniveling, usually poor, obvious con-artists. They typically display cowardice, being quick to run away, but they also have a temper. They are almost exclusively in villainous roles.

New Ageism: Weasels are considered full of energy yet stealthy. They can understand how a situation is unfolding as it goes forth, as they have good insight. They are also messengers, who can go forth and learn something, then understand it well and spout the important details. However having a weasel spirit animal is considered unlucky despite these gifts.