My 9 month old American Bully Sophie has had loose stools (sometimes totally liquid) for over a month. She has completely normal energy, appetite, is putting on constant weight and the vet found nothing concerning in multiple stools samples. She was on Nutrisource chicken and rice formula and was switched to salmon and potato 4 Health, as the vet thought it could be a chicken allergy. She's been on this food for about a month with no improvement. She is also on her 2nd round of Proviable probiotic. I need to add, that she only takes 1 to 2 poops a day, so not constant diahreaa. I plan on checking in with the vet tomorrow, but thought I'd reach out. Any info/tips would be much appreciated.