Don't worry too much about the loose stool. This also happened to my dog when I first switched her to raw. It just takes a bit of time for her system to adjust to the new diet.
In the meantime, although there is not problem with just waiting it out, here are some natural remedies to firm up your dog's stool;
-Add some canned pumpkin (NOT pie filling) to his diet. Generally, you starting with somewhere between a teaspoon and a tablespoon depending on the size of your dog.
-Some plain yogurt may help which has probiotics in it which aid in intestinal/colon health. Again, generally somewhere between a teaspoon and a tablespoon depending on the size of the dog.
-If your dog seems to have any intestinal discomfort throughout this transition process, you could try some peppermint or chamomile herbals teas or extracts which have been proven to act as an antispasmodic aiding in intestinal discomfort.
*Overall, I'd just wait it out. This is just the transition process with it's evident side effects. If his stool is still loose in a few more weeks, you could consider trying some of the methods above. Again, you could try these methods, but if left alone everything should work out just fine. :smile: