Yes that is a good thought and I agree I know that it can cause a blockage so have worried about that but she never eats the cardboard I only let her chew on it while I'm sitting right there and I of course watch like a hawk. She rips and then spits it out I'm sure it's possible she has swallowed a tiny bit in the past but if so I have not seen it happen. By the size of the pile of cardboard pieces on the ground when she's done it always seems to be all there.
Plus I've never seen any sign of it in her poop, I would think there would be some remnant that would make it through her digestive system. (she has chewed up pieces of plastic ball etc also which I do take from her but when she has there have been the bits she spits out on the floor and I have never seen that come out in her poop either, they would be easy to see since not digested and bright colors, so that also tells me she isn't sneaking swallows in at least in general). I just feel bad for her since she can't have chews like other puppies and she still has a huge urge to chew she needs something. And of course isn't interested in most of the few chew safe toys she can have...
I have tried to take her on plenty long walks and play sessions but that also seems to make her sick. I have a horrible stomach myself and had to stop going to the gym because every time I worked out or even just went on a very long walk my stomach would kill more more than usual for days. So it's harder to give her as much exercise as she needs so she's not antsy and bored at home and looking for something to do like chew.
Now we do have a problem with digging in the yard, I let her do it because it is good shoulder exercise and she loves it, plus it's easy to fill up holes and replant! But she has unfortunately discovered that little rocks live in the dirt so now her digging is a quest to find them and then take off with one in her mouth! I hated to see that because now the game definitely has to stop and she has so much fun digging.
She never goes into the yard by herself so when she starts digging I spray the ground there with bitter apple which makes her stop.
Why is it that anything that is fun or tastes good, is bad for us!
We have definitely narrowed down the root of her tummy issues as being bacteria related so holistic vet is coming at it from a different angle now. I sure hope she is successful it's no fun living every day in worry and panic over every move she makes and seeing her get sick no matter what.
I needed a longer break from this crap after dealing with all of poor Hallie's issues for so long I really expected this time to be different and maybe have at least a few good years for the first time in my dog owning life....Sophie's breeder used to be very supportive but even he is over it now and never responds to my updates about her health. I guess I can't blame him though!