i think that my dog has this. he has been the vets this week with a swollen belly. hes an irish blue dog. They said he has protein fluid in his belly and have gave him tablets to hopefully reduce the ammount in there. we take him back next monday in the hope that the fluid has reduced and if so they can operate and investigate the cause and hopefully resolve. However if we go back and there is no change then chances are we will have to have him put to sleep. Hes only 8 and it usually a hand full of joy however hes just a shadow of himself. Just lying in the rooms and not interested in anything. fingers well and truly crossed but ti isnt looking good