Were wolf porn is the sultry material where a werewolf has an interest in having sexual contact with women or men. It may also involve other strange scenarios that don't directly involve werewolves but still contain plenty of gore and filth.
As a rule in werewolf media, werewolves often look just like plague rats (even more so than in folklore). This design choice has nothing to do with realism or any sort of folklore whatsoever; rather, it has become an increasingly popular aesthetic choice that's been featured on numerous movies and TV shows for years now.
Underworld started this trend, but it's become a ubiquitous design choice across werewolf movies today. Their main distinguishing characteristics include having longer muzzles that look more ape-like than wolf-like, and having no tails at all (which was likely intentional for budget reasons).
Some werewolves do sport tails, particularly those featured in the Underworld movies and the original 1941 film. This design choice likely stemmed from necessity when those early films had to cut costs - especially when they were mostly low-budget B movies with limited production values.
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Another design trend that's become increasingly popular over the past couple of decades is an overall lack of fur. This used to be common, especially in older werewolf movies with actual wolves, but nowadays you rarely see much fur anywhere and most designs don't even attempt it.
One of the major issues with werewolf designs nowadays is that they often look completely opposite from what wolves would appear in most, if not all folklore stories. Werewolves may have fur but it's usually sparse and what little there is usually part of a human body hair pattern rather than an authentic wolf-like coat.
It's also quite common to see werewolves that are simply ugly. This trend has been around for some time, but it really took off in the 80s due to realism issues (especially when they're not wolf-men).
Realism aside, werewolves don't really resemble werewolves at all. This problem exists not just with werewolf media but also most horror and fantasy works in general. It's unfortunate because werewolves can actually look quite decent; it's only due to their realism that they were often portrayed as hideous instead of because they actually are.