Q: My income is limited, but I wouldn’t part with my dog, Max, or cat, Mimi, for anything. How should I spend what I’ve budgeted for pet health care? A: The best way to save money on pet care is to prevent disease rather than treat it. Let’s start with some free ways to do that. First, keep Max and Mimi slim. Research shows that slim dogs live two years longer than their heavier counterparts. Moreover, slim pets develop fewer chronic diseases, which can be expensive to diagnose and treat. For example, overweight dogs are at risk of osteoarthritis, and overweight cats are prone to diabetes. Minimize tooth and gum disease by feeding a dental diet accepted by the Veterinary Oral Health Council. These diets, which reduce plaque and tartar, are listed along with recommended treats and other dental products at VOHC.org In addition, brush your pets’ teeth with pet …