Hi Allie-
I see that most of your research has been browsing through the opinions of other pet parents with similar situations. The problem with that is exactly what you have come across…SO many different view points, so many different opinions. Makes it impossible to know what the best coarse of action is for YOUR dog.
It sounds to me like this is a very invididualized case (since he is also eating other foreign objects that he shouldn’t be) that needs the attention of a trusted vet. They will be able to exam your dog and help you determine the cause. Until then, the more you change, the harder it will be to pin-point the cause.
As for the food…Acana might have too much or the wrong kind of fiber for your dogs digestive system given that he is pooping 3-5 times a day. It sounds like this may not be the best food for your dog. However, I would make an appointment with the vet before changing foods and also ask about the frequent bowel movements to confirm.
