17 is a grand age!! Good for you for getting your baby to this great time in his life. Kidney disease is very common in older cats. If he will only eat dry food, then the prescription food maybe your best choice only because the last thing we want is for him to stop...
You have no idea the difficulty of the question you are asking! 🙂 I have a heck of a time suggesting any dry kibble. Here’s the truth: Dry food makes dry pets. 75-90% of the moisture is removed from the food to make it dry. But, if you have to go dry, here are some...