Erika,
The Natural Balance Venison food is fairly low in fiber at 4%. NB does have Duck and Potato at 3% and Taste of the Wild has several varieties at 3%. Most kibbles are at least 5 to 6% fiber.
Since your girl had loose stool before switching to NB, her gut is probably still adjusting to this new food. Natural Balance does not add probiotics to their food and I suspect the low quality food she was on prior did not have probiotics either. Since her stool is formed now, you may want to give it 2 or 3 months before changing or adding another food to the mix. There is a good chance that once her gut bacteria has had time to get established, she will not have as frequent bowel movements.
I have personally found it to be beneficial to add a good dog probiotic with multiple strains of bacteria when doing food changes.
