Gallstones: http://ferrethealth.org/archive/SG15408 http://ferrethealth.org/archive/SG15406 http://ferrethealth.org/archive/SG15387 Using search terms gallbladder and stone: http://ferrethealth.org/archive/YPG1050 Using search terms bile and stone: http://ferrethealth.org/archive/SG15350 http://ferrethealth.org/archive/SG6476 and there are certainly others but these seemed to possibly be the best fits for your needs. It is more typical to hear of uroliths (urinary tract stones). Sukie (not a vet) Recommended ferret health links: http://pets.groups.yahoo.com/group/ferrethealth/ http://ferrethealth.org/archive/ http://www.afip.org/ferrets/index.html http://www.miamiferret.org/fhc/ http://www.ferretcongress.org/ http://www.trifl.org/index.shtml http://homepage.mac.com/sukie/sukiesferretlinks.html [Posted in FML 5810]