If your cat doesn't have food allergies ... which includes insoluble fiber to help prevent constipation. For dry food, we recommend Hill's Science Diet Sensitive Stomach and Skin Adult Salmon ...

Signs that your cat isn't drinking enough water include sunken eyes, dry mouth, constipation ... And if your cat eats dry food, MCVH suggests switching to canned food instead.

“Wet food does not have as long of a ‘shelf life’ in the bowl as dry food,” Dr. Nelson ... a canned-food-only diet may also lead to constipation for some cats, who may then need fiber ...