Best High-Calorie Dog Foods for Underweight Dogs

Why Underweight Dogs Need High-Calorie Diets

Underweight dogs often need more calories than standard kibble provides. According to expert guides, dogs get their primary energy from animal protein and fats. For dogs with fast metabolisms—especially small breeds—increasing caloric intake through high-fat, high-protein foods is essential. A dog’s body condition should allow you to feel individual ribs and see a defined waist. If ribs are hard to feel and the waist is lost, the dog may be underweight or overweight, requiring dietary adjustment.

Effective Homemade High-Calorie Recipes

A trusted recipe for underweight dogs includes two cups of soaked oat flakes, half a cup of peanut butter, one banana, and a healthy drizzle of olive oil. This mixture can be fed as an in-between-meals snack daily to help a dog gain weight. Another effective method is adding salmon oil to meals—rich in omega-3 fatty acids and high in calories, it supports both weight gain and joint health in senior or active dogs. Fish oil, especially salmon oil, is recommended for its added benefits beyond just calories.

High-Calorie Ingredients to Add to Dog Meals

To increase calorie density, include ingredients like olive oil, peanut butter, and cheese. These add healthy fats without increasing volume significantly. For protein, feed fattier cuts of meat such as chicken or turkey. One guide notes that active dogs, like agility dogs, benefit from being given the fattier pieces during meals to maintain energy and muscle tone. Adding a small amount of salmon oil to meals can also help underweight dogs gain weight while supporting skin and coat health.

Avoiding Common Pitfalls in Weight Gain

While boosting calories is key, avoid overfeeding low-nutrient snacks. Treats should not exceed 15% of total daily calories. Instead of high-carb or low-fat treats, opt for healthy, calorie-dense options like carrots or apple slices if needed. For dogs needing to gain weight, reduce or eliminate low-calorie fillers like excess vegetables unless they’re used to add bulk without extra calories. Focus on nutrient-dense, high-fat foods to ensure the dog gains healthy weight, not just fat.

When to Consult a Veterinarian

If a dog remains underweight despite dietary changes, consult a veterinarian. Specialized reducing or high-calorie diets can be prescribed. While commercial low-calorie foods are designed to reduce calories safely, the reverse—high-calorie diets—should be carefully managed. A vet can help determine if an underlying health issue is preventing weight gain and recommend a tailored plan.