What is going on with my new puppy? Background information: I purchased a Cane Corso puppy born 4/3/09 from a reputable breeder, obtained the puppy on 7/7/09 she had already been given a 7way DHLPPC on 7/3/09 and a Drontal dewormer, puppy came from a litter of 15, both parents were on premiss when purchased, breeder feeding Purina One. I took her to the veterinary hospital where i work the same day i got her & she was running a slight temperature (103) the doctor said this could have been due to the fact that she vomitted & had a bowel movement in my car b/c she was car sick. That day i ended up giving her 1st bordetella & she got cephalexin to be given orally for a small cut on her paw as well as panalog to apply to that. This is where the problem sets in: July 8-gave heartworm pill (sentinel), applied panalog, gave strongid dewormer, gave cephalexin BID, did a stool sample check (came back negative), had semi formed stool. July 9th-cephalexin BID, panalog TID, firm stool July 10-cephalexin BID, panalog TID, loose stool July 11-cephalexin BID, panalog TID, loose stool frequently July 12-cephalexin BID, panalog TID, loose stool frequently July 13-scheduled for ear crop, ran bloodwork & came up anemic doctor opted not to do surgery for a week though eating habits were normal, gums were pink, & puppy was acting fine, cephalexin BID, panalog TID, loose stool frequently July 14-talked to a 2nd doctor at my clinic decided to run another fecal came up negative, started panacur, cephalexin BID, panalog TID, had diarrhea July 15-2nd dose of panacur, cephalexin BID, panalog TID, 1 spoonful of plain yogurt, had diarrhea July 16-Was advised to take off cephalexin (had only 1 pill in AM), 1 spoonful of yogurt, 3rd & final dose of panacur, panalog TID, had diarrhea July 17-talked to 3rd doctor about diarrhea gave diathol shot for diarrhea 9am & 9pm, started feeding canned science diet I/D TID, started metronidazole, & diatro BID, applied panalog TID, had diarrhea w/ small amounts of blood in stool, discussed this w/ doctors at work they are clueless as to what it could be. July 18-2nd dose of strongid dewormer, diathol shot 1pm, 1/4 pill of metronidazole, I/D fed only, loose stool AM, firmer stool PM July 19-metronidazole BID, I/D fed only, had to withhold food due to possible surgery the next day July 20-ran bloodwork again, still anemic but improved from previous week bloodwork, doctor still opted not to do surgery, received metronidazole & diatro AM only, weaning off I/D back to Nutro large breed puppy food, firm stool July 21-took off ALL meds, weaning off I/D, gave vaccines (2nd bordetella, DHLPP, rabies), semi loose stool July 22-loose stool, doctors say start Albon pills to exhaust any underlying parasites or bacterial infections. Had 2 albon pills, loose stool July 23-2nd day of Albon 1 pill, checking for possible food allergy and weaning off Nutro Large breed puppy food onto Merrick Puppy plate, very loose stool July 24-Ran bloodwork and another stool sample check, stool came back negative and bloodwork again improved but not 100%, doctor opted to do ear crop, had diarrhea PM, weaning onto Puppy Plate by Merrick, 3rd day of Albon, Tramadol BID for pain, got pain shot as well July 25-ears healing fine, still has diarrhea, weaning onto Merrick Puppy Plate, tramadol BID for pain from ear crop Sorry for the long explanation but does ANYONE have any guesses as to why the diarrhea still? It IS controllable diarrhea (she is having no accidents in the house or crate) but its still such loose stool. i work at a clinic w/ 8 veterinarians that are puzzled. I was considering maybe switching food again but don't know if thats where the problem lies i'm so lost and confused! Merrick is considered a very good food but also almost human grade so maybe its to much for her, please help!