Finding the best dog weight gainer for your furry friend can be a daunting task, especially with the multitude of options available on platforms like Amazon. If your dog is underweight, recovering from illness, or simply needs to bulk up, a weight gainer can be a game-changer. In this article, we’ve scoured Amazon to bring you the top 10 dog weight gainers, each reviewed in-depth with a look at their features, pros, and cons for 2025.

1. Purina Pro Plan Veterinary Diets Weight Management Formula

Purina Pro Plan Veterinary Diets is specifically formulated to help your dog gain healthy weight responsibly. This product blends high-quality ingredients with additional nutrients, ensuring that your dog gets the best possible support for weight gain.

Features include a rich protein profile, essential fatty acids, and balanced fiber for digestion. This formula is also fortified with vitamins and minerals to promote overall well-being.

Best For: Dogs needing controlled weight gain under vet supervision.

Product Review

This weight gainer is particularly effective for dogs recovering from illness or injury. The carefully balanced nutrients help dogs gain weight without compromising their health. The palatability of this food is excellent, ensuring that even picky eaters will dig in.

Pros

• Designed for veterinary use, which adds credibility.
• Fortified with vitamins and minerals.
• High protein content promotes muscle gain.

Cons

• Veterinary approval is recommended.
• May be expensive for some dog owners.

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2. Merrick Grain-Free Texas Beef + Sweet Potato Recipe

Merrick Grain-Free Texas Beef + Sweet Potato Recipe offers a delicious blend of beef, sweet potatoes, and peas, making it not only a great source of protein but also rich in healthy carbs. The grain-free formula is excellent for dogs with grain sensitivities.

With 60% protein and healthy fats, this high-calorie formula can help your dog gain weight while enjoying mealtime. It’s also rich in DHA for healthy brain development.

Best For: Dogs with grain allergies or sensitivities.

Product Review

Pet owners rave about the quality of ingredients and the taste that even the pickiest dog enjoys. The high protein and fat content help dogs put on weight effectively. The brand’s commitment to safe, quality ingredients puts pet parents at ease.

Pros

• Grain-free recipe suitable for allergic dogs.
• High protein content.
• Made in the USA with fresh ingredients.

Cons

• Some dogs might require a transition period.
• Premium pricing may not fit every budget.

3. Hill’s Science Diet Adult Perfect Weight

Hill’s Science Diet is well-known for its scientifically formulated pet foods. The Adult Perfect Weight formula provides a unique blend of nutrients designed to help dogs gain and maintain a healthy weight.

This formula features high-quality protein sources along with L-carnitine to assist in fat utilization. It’s designed to be easy to digest and palatable for dogs of all breeds and sizes.

Best For: Dogs needing to gain weight healthily.

Product Review

Many dog owners have found success with this formula, noting that their dogs put on weight gradually and healthily. The easy-to-digest components and appeal make this a go-to for many pet owners looking for a reliable weight gainer.

Pros

• Scientifically formulated for health and vitality.
• Great palatability ensures acceptance.
• Easy to digest.

Cons

• Takes longer to show visible weight gain compared to others.
• Pricey relative to generic brands.

4. Victor Hi-Pro Plus Dry Dog Food

Victor Hi-Pro Plus is a high-protein dog food that caters to active dogs and those who need to gain weight. This formula contains 30% protein and is fortified with amino acids, vitamins, and minerals.

The blend includes beef, chicken, pork, and fish meals, ensuring a rich source of protein. It’s also gluten-free, making it suitable for dogs with grain allergies.

Best For: Active dogs who require extra fuel.

Product Review

Dog owners often comment on the noticeable improvements in their dogs’ energy levels and muscle mass. The premium ingredients combined with high protein content make this a top choice for gaining weight effectively.

Pros

• Contains a variety of quality protein sources.
• Nutrient-rich for optimal health.
• Gluten-free.

Cons

• Might cause digestive upset in sensitive dogs.
• Not suitable for dogs with specific dietary restrictions.

5. Blue Buffalo Life Protection Formula

Blue Buffalo’s Life Protection Formula combines real meat with whole grains, garden veggies, and fruit, offering dogs the protein they need to gain healthy weight. This formulation includes Omega 3 & 6 fatty acids for overall health and coat condition.

The recipe is free from artificial flavors and preservatives, appealing to health-conscious pet owners. It’s designed with a mix of real meat, whole grains, and vegetables to support weight gain without undesirable additives.

Best For: Dogs looking for a natural weight gainer.

Product Review

This product shines in flavor and quality, receiving high praise from both dogs and their owners. The natural ingredients contribute to coat health and energy levels while promoting gradual weight gain.

Pros

• Made with natural ingredients.
• Supports healthy skin and coat.
• Zero artificial additives.

Cons

• Some dogs might find it less appealing than other brands.
• Higher price point compares to other options.

6. Fromm Gold Nutritionals Large Breed Adult Dog Food

Fromm Gold Nutritionals offers a specialized formulation for large breed dogs needing weight gain. This recipe focuses on high-quality proteins and wholesome grains to encourage healthy weight gain and muscle development.

Features include duck, chicken, lamb, and fish, providing a vast protein profile. The presence of probiotics helps enhance digestion, ensuring your dog absorbs as many nutrients as possible.

Best For: Larger breeds needing an effective weight gainer.

Product Review

The blend of protein sources creates a tasty and nutritious meal option, and pet owners note that their dogs love the taste. Additionally, the mix of probiotics contributes to firmer stools and overall gut health.

Pros

• Rich protein sources support muscle gain.
• Includes probiotics for digestive health.
• Suitable for large breed dogs.

Cons

• Not suited for small breeds or those with specific dietary requirements.
• Price may be higher than conventional brands.

7. Sportmix Energy Plus Formula

Sportmix Energy Plus Formula is ideal for those looking for an affordable high-calorie dog food option. With significant levels of protein and fat, this formula is designed for puppies and active adult dogs needing to bulk up.

This formulation combines meat-based proteins with added vitamins and minerals to ensure your pet receives complete nutrition. Its affordable price point makes it accessible for more pet owners.

Best For: Budget-conscious owners of active dogs.

Product Review

This product comes highly recommended for its cost-effectiveness. Many dog owners report visible weight gain and improvements in energy, making it an excellent value for those looking to help their dogs reach a healthy weight.

Pros

• Affordable option for high-calorie dog food.
• Good protein and fat levels.
• Great for high-energy dogs.

Cons

• Ingredients may not be as premium as other brands.
• May not appeal to picky eaters.

8. Earthborn Holistic Coastal Catch Grain-Free

Earthborn Holistic Coastal Catch provides a grain-free formula that is rich in omega fatty acids, which promotes not just weight gain but overall health. Packed with salmon as the primary protein source, this formula is easy to digest and highly palatable.

Features include the inclusion of fruits and vegetables for antioxidants and fiber, making this a holistic choice for weight gain in dogs. The focus on natural ingredients helps maintain both health and weight.

Best For: Dogs with specific dietary needs.

Product Review

Pet owners have reported positive results in weight gain, and many dogs enjoy the taste. The thoughtful approach to nutrition helps ensure that dogs gain weight healthily rather than rapidly.

Pros

• Rich in omega fatty acids.
• Grain-free and filled with nutritious ingredients.
• Holistic approach to weight gain.

Cons

• Price may be higher than non-grain-free options.
• Some dogs may require a transition period.

9. Orijen Original Dry Dog Food

Orijen Original Dry Dog Food is an excellent option for those seeking a high-protein, nutrient-rich weight gainer. This formula is designed with fresh and regional ingredients, ensuring that your dog gets the best nutrients for healthy weight gain.

With a protein content of 38%, combined with healthy fats and carbohydrates from fruits and vegetables, this formula remains one of the top contenders for the best dog weight gainer in 2025.

Best For: Dogs needing a natural, high-protein diet.

Product Review

The palatability of this food is unmatched, with most dogs enjoying it wholeheartedly. Many dog owners report effective weight gain within weeks of starting this diet, which emphasizes natural ingredients and biology-based nutrition.

Pros

• High protein content with real meat as the first ingredient.
• Fresh and regional ingredients for quality assurance.
• Great for building and maintaining muscle.

Cons

• Higher price compared to some mainstream options.
• Some dogs may need time to adjust.

10. Nutrience Subzero Grain-Free High-Performance

Nutrience Subzero is a high-performance food featuring a unique blend of animal proteins and superfoods designed for active and underweight dogs. This product boasts a rich variety of proteins, ensuring that your dog has everything it needs to gain weight naturally.

With a meticulous formulation that combines ingredients like Arctic cod and a blend of fruits and vegetables, this weight gainer is an excellent choice for supporting your dog’s health and vitality while encouraging weight gain.

Best For: Active dogs needing a rich protein source.

Product Review

Pet owners love the fact that this food is not only effective at promoting weight gain but also supports energy levels and coat health. The blend of different protein sources ensures dogs get the nutrition they need without artificial additives.

Pros

• Combination of various protein sources.
• Grain-free and packed with nutrients.
• Enhances overall health and energy levels.

Cons

• May be on the pricier side.
• Transition may be needed for dogs sensitive to dietary changes.

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Wrapping Up the Options

Choosing the right dog weight gainer from Amazon requires careful consideration of your dog’s specific needs, dietary restrictions, and preferences. Whether you’re looking for a grain-free option, something specially formulated for large breeds, or a holistic approach, you’re bound to find something that fits the bill among our top 10 picks.

Buying Guide for Dog Weight Gainers

If you’re looking to help your dog gain weight and improve their overall health, using a weight gainer can be a beneficial option. This guide will help you choose the best one for your furry friend.

1. Identify the Need

Reasons for Weight Gain

• Underweight or Recovering from Illness: Dogs recovering from illness or with high metabolisms may need additional calories.
• Active or Working Dogs: Highly active breeds or those performing strenuous activities might require extra nutrition.

Consult a Veterinarian

Before starting any weight gain program, consult your veterinarian to ensure that your dog’s weight issues are not due to an underlying health condition.

2. Types of Dog Weight Gainers

1. Caloric Supplements

• High-calorie gels or liquids that provide concentrated energy.
• Good for picky eaters who may not consume enough food.

2. Dry Food Formulas

• Specially formulated kibble that has higher fat and protein content.
• Suitable for regular feeding.

3. Wet Food Options

• High-calorie canned food can entice picky eaters and provide hydration.

4. Homemade Options

• You can create weight gain meals using ingredients like sweet potatoes, brown rice, and proteins (chicken, beef).

3. Key Ingredients to Look For

1. High-Quality Proteins

• Look for meat sources (chicken, lamb, fish) listed as the first ingredient.

2. Healthy Fats

• Ingredients like chicken fat, fish oil, or flaxseed can provide concentrated calories.

3. Carbohydrates

• Complex carbs (brown rice, oats) are essential for energy.

4. Vitamins and Minerals

• Ensure the product is balanced with essential vitamins and minerals for overall health.

4. Consider Your Dog’s Preferences

1. Taste and Texture

• Try different flavors and textures (dry vs. wet) to find what your dog enjoys most.

2. Allergies and Sensitivities

• Be cautious of any food allergies. Opt for grain-free or hypoallergenic options if necessary.

5. Brand Reputation and Reviews

1. Reputable Brands

• Choose established brands known for quality control and good manufacturing practices.

2. Customer Reviews

• Read testimonials from other dog owners to gauge effectiveness.

6. Feeding Guidelines

1. Follow Package Instructions

• Adjust feeding amounts based on your dog’s weight and activity level.

2. Monitor Progress

• Regularly check your dog’s weight and health. Adjust the feeding amounts as needed.

3. Combine with Regular Diet

• Gradually incorporate the weight gainer into your dog’s regular diet for best results.

7. Price Considerations

1. Budget

• Weight gainers can vary widely in price. Aim for quality without overspending.

2. Quantity and Frequency

• Consider how long the product will last based on your dog’s size and feeding frequency.

Conclusion

Choosing the right dog weight gainer requires careful consideration of your dog’s individual needs, preferences, and health. Always consult with your veterinarian before introducing any new supplements, and monitor your dog’s weight and health regularly. With the right product, you can help your furry friend achieve a healthy weight and a happier life!