I've been wondering about this for a while. Is the Wyvern tag an appropriate tag for everything Monster Hunter deems as a Wyvern? The series uses the term very loosely, reaching far from Danbooru's definition on the wiki (post #833989 for example is a Brute Wyvern).

It doesn't seem appropriate. Tags should match their wiki descriptions.

Dragon on the other hand seems to be a much broader term, even in Danbooru's wiki. The general idea of a Dragon seems to fit most things in MH, but what about the one's that don't? (Pelagus, which covers most mammalian things in the game, is obviously out of the question, but what about things like Gigginox or Gobul?)

It really seems like a case by case situation, but what are some general guidelines on how broad Dragon or Wyvern should be?

Why not using wyvern_(monster_hunter)?

It seems unnecessary to create a new tag for this, and more merit in better defining ones we already have.

For miscellaneous monster hunter monsters you can simply tag them as monster/animal. Those that have wyvern-like traits ought to be tagged wyvern.

According to wikipedia, dragons have arms and legs with separate wing appendages. Monsters like Alatreon and Teostra would qualify as dragon under this definition. A wyvern has wings and no more than one pair of legs. Monsters like Rathalos and Barioth would qualify for wyvern. Note that though Barioth and Nargacuga have claws, they're actually integrated into the wing, thus they should be tagged wyvern. By this definition Gigginox and Khezu are wyverns.

Brute Wyverns shouldn't be tagged as either of them (unless, of course, the artist decides to give them wings for whatever reason). I don't think miscellaneous monsters need specific tags, really. If we have something that fits, use it. Dinosaur for Deviljho and Barroth should be acceptable. I don't think anyone will complain over fictional dinosaurs littering their vanilla dinosaur tag. I can't think of any existing tag to use for gobul other than fish, but as long as monster_hunter monster gets all of them it's fine.

That makes sense, but my only problem with that is not all Dragons have wings. Eastern dragons, for instance, don't have wings but are clearly dragons, and as far as I know use the same tag. That would not only include Raviente but I would think Lagiacrus as well, who strikes me as pretty dragon-like.

Split the dragon tag to eastern_dragon and western_dragon?