Their digestive enzymes and microbiome have adapted to the diet they're used to eating. An abrupt change in the type of diet (change in brand or protein base) will cause an inflammatory response along the intestinal lining, leading to gastrointestinal signs such as vomiting and diarrhea.
Can kibble cause diarrhea in dogs?
Change in Kibble A sudden change in diet can upset your dog's stomach and intestinal tract, leading to diarrhea.
What can I feed my dog to firm up his stool?
Feed Your Dog Canned Pumpkin If your dog's stool is loose and watery, try giving your dog plain canned pumpkin to help alleviate any stomach issues. You can also add a little canned pumpkin to your dog's food for a natural source of fiber.
When should I worry about loose stools in dogs?
If the diarrhea doesn't resolve by holding back on food and then re-introducing a bland diet, though, then it's time to call your veterinarian. Pets that have chronic soft stool or chronic full-blown diarrhea should definitely be examined by a veterinarian, even if they are otherwise behaving normally.