User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4993026-20121223132354/@comment-4555457-20121224233833

There are some obvious differences between the two groups, fanged beasts being less primate based obviously but also in how they move and attack - pelagus monsters like to jump around the battlefield and generally were accompanied with minion monsters, while fanged beasts prefer charging and clawing (we'll pretend sliding on ice and rolling are charging too)

fanged beast have no tails either and can't roar loud (yet)