Hi, we have been feeding raw food to our cats for 10 years. Two of our cats are older now age 12 and 14. We had an issue with constipation with one of our cats a while back and switched up the ratio of bone in their food. We now started a different raw food that has 9-10% bone, which is pretty standard from my understanding. Now it seems our other cat is constipated. Has anyone had this issue?