I've seen quite a few images, including a recent mini-flood of related ones, that tag anthropomorphic wolves as "werewolf". How do we know a character is a werewolf unless there is something explicit within the image to indicate this?
The following image, for example, is what I would consider a valid "werewolf", since it actually shows the transformation process underway.
On the other hand, the next image is of what appears to be ordinary anthropomorphic wolves. In this case the "werewolf" tag is inherited by implication from the "worgen" tag, although there is nothing I see in this image to indicate that these are worgen, and not ordinary humanoid wolves. Besides, I would consider the worgen -> werewolf implication to be in error since, as I understand the history of the setting, not all worgen are capable of shapeshifting.
Finally, in the following image (one of the recent mini-flood I mentioned) there is absolutely nothing in evidence to indicate any shape-shifting capability of the tagged characters.
In the case of many "werewolf"-tagged images I don't think the use of the tag is in keeping with the "tag what you see" rule, since an ordinary anthro-wolf is indistinguishable from many of the characters which get this label.
Updated by randomwolfguy