Your dog probably has IBS or IBD and it is triggered by food sensitivities. Your dog may have become sensitive to something in the rabbit food, because food sensitivities change over time. Talk to your vet about doing an elimination diet and have him explain, in detail, what you need to do to do it properly. The tests the vet wants to do would probably give you a definitive diagnosis, but you would probably still have to do an elimination diet to treat the problem. The longer you let this go, the more permanent damage is being done to the intestines, so get with your vet as soon as you can.
