Best Diet and Exercise for Overweight Dogs

Start with the Right Diet

An overweight dog needs a diet that reduces calories without sacrificing nutrition. The best approach is to feed a commercial weight-loss dog food that is less dense in calories—typically between 300–340 kcal per 100g. These foods replace fat with digestible carbohydrates, which are preferable to indigestible fiber. They allow the dog to eat a satisfying volume while consuming fewer calories.

If using the dog’s current food, reduce the portion size based on the ideal weight, not the current weight. For example, a 128-pound dog aiming to reach 60 pounds should be fed as if it were a 60-pound dog. This means feeding about one cup of food per 20 pounds of ideal body weight daily. Avoid feeding snacks, table scraps, or treats, as these add hidden calories.

If needed, a veterinarian can prescribe a stricter calorie-restricted diet. Always ensure the diet meets AAFCO standards for complete and balanced nutrition.

Exercise Gradually for Safety and Success

Exercise is essential for weight loss and helps maintain lean muscle mass. Walking is an ideal, low-impact activity. Start slowly—begin with short walks and gradually increase the duration over time. The goal is to avoid injury and ensure the dog can keep up without collapsing.

Swimming is another excellent option, especially for dogs with joint issues, as it reduces strain on the body. The key is consistency and gradual progression. Sudden increases in activity can lead to exhaustion or injury.

A successful program includes both diet and exercise, with the entire household supporting the plan. Poor compliance—such as giving treats or feeding table scraps—can derail progress.

Monitor Weight Loss Safely

Track your dog’s progress by weighing them weekly and charting the results. A safe rate of weight loss is 1–2.5% of the dog’s starting body weight per week. For example, a 100-pound dog should lose no more than 1 to 2.5 pounds per week.

Rapid weight loss can lead to health problems, including loss of lean muscle mass and increased hunger. It can also cause the body to “spare” fat tissue, which slows progress. If weight loss stalls, consider adjusting the diet or exercise plan under veterinary guidance.

Maintain the Results Long-Term

Once your dog reaches their ideal weight, continue feeding a balanced diet to maintain it. Use the dog’s regular food as treats, and deduct that amount from their daily ration. Avoid returning to old habits, such as overfeeding or giving snacks.

A sustainable, long-term plan is key. Many dogs regain weight after initial success due to a return to previous behaviors. Support from the entire household and ongoing monitoring are critical to lasting success.

When to Seek Professional Help

If weight loss stalls or the dog shows signs of distress, consult a veterinarian. Specialized diets and prescription weight-loss drugs like Splentrol may be recommended. These are most effective when combined with a reduced-calorie diet and increased exercise.

Veterinary support can help create a personalized, safe, and effective weight-loss program tailored to your dog’s needs.