As far as bvrs with tails bigger than thier bodys, i dont believe that could be. This time of year unless a very late litter, the bvrs will be about 15 #s . Make some castor sets and get yr skinning knives sharpened. I just took two large bvrs out a section of river where there wasnt any sign at all except for some small cleaned off pencil sized wood. Good Luck...