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10 Best Dog Weight Gainers 2025 in the United States

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Our Top Picks

#1

Winner

Bully Max High Protein & Fat Dry Dog Food for Muscle & Weight Gain - High Performance Healthy Dog Food Supplements for Puppies & Adult Dogs, Small & Large Breed (535 Calories Per Cup), 5 lb. Bag

Rating
9.8
Chosen by1,351
Protein Content
Flavor and Palatability

Most important from
6539 reviews

Protein Content
Significant muscle weight gain observed in dogs.
Flavor and Palatability
Even picky eaters enjoy the taste when mixed with other foods.

Bully Max Dry Dog Food is a specialized product designed to support muscle and weight gain in dogs. One of its standout features is its high caloric content, providing 535 calories per cup, which is beneficial for dogs needing extra energy and weight gain. This high density also means smaller serving sizes, making it cost-effective in the long run. The protein content is substantial at 30%, predominantly sourced from chicken meal, which supports muscle development effectively. Additionally, the fat content stands at 20%, contributing to overall weight gain and energy levels.

The formulation includes quality ingredients like chicken fat, brown rice, and whitefish meal, which are known for their digestibility and nutritional value. The inclusion of dried plain beet pulp adds fiber, aiding in digestive health. Flavor-wise, the chicken blend is likely to be appealing to most dogs, enhancing palatability. However, the product's pellet form might not be suitable for very picky eaters or those with dental issues. The nutrient-rich composition includes essential vitamins and minerals, contributing to overall health and vitality across all life stages and breeds.

Notably, Bully Max adheres to high safety standards and has a strong reputation with no recalls reported. This makes it a reliable choice for dog owners seeking a high-performance diet. On the downside, the 5-pound bag size might be insufficient for owners of larger dogs or multiple pets, requiring frequent purchases. Additionally, while the high protein and fat content is beneficial for active and growing dogs, it may not be suitable for less active or overweight dogs. Bully Max Dry Dog Food is an excellent option for those seeking to enhance their dog’s muscle mass and weight in a healthy manner, though consideration should be given to the dog’s specific activity level and dietary needs.

Rating
9.8
Chosen by1,351
Protein Content
Flavor and Palatability

Most important from
6539 reviews

Protein Content
Significant muscle weight gain observed in dogs.
Flavor and Palatability
Even picky eaters enjoy the taste when mixed with other foods.
#2

Bully Max 2X Calorie Dry Dog and Puppy Food PRO Series, High Protein, Healthy Weight Gain and Muscle Mass for All Breeds | 600 Calories Per Cup | Slow-Cooked | Zero recalls

Rating
9.6
Caloric Content
Protein Content
Fat Content

Most important from
771 reviews

Caloric Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Protein Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Fat Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Digestibility
This food has been transformative for an underweight, malnourished German Shepherd, helping him gain weight, increase energy levels, and improve digestive health.
Flavor and Palatability
Dogs absolutely love the taste of this food, making it a hit even among picky eaters.
Ingredient Quality
Despite its premium price, the food is highly effective and worth the investment, with noticeable improvements in the dog's overall health and appearance.
Supplement Form
For senior dogs with chewing difficulties, the kibble can be easily blitzed in a food processor and mixed with wet food.

The Bully Max Pro 2X High Calorie & High Protein Dry Dog Food is a solid option for dog owners seeking to boost their pet's weight and muscle mass. With 600 calories per cup, it is exceptionally calorie-dense, making it suitable for dogs needing to gain weight. The high protein (31%) and fat (25%) contents support muscle building and overall health. This product also includes heart-healthy flaxseed and 19 essential vitamins and minerals, providing a nutritious diet for dogs of all sizes and breeds. It's especially beneficial for performance dogs and those needing to bulk up.

The food is designed for easy digestion and optimal nutrient absorption, which helps in maintaining the dog's energy and well-being without causing digestive discomfort. Additionally, it is free from cheap fillers, soy, corn, and artificial flavors, indicating a focus on ingredient quality. However, potential buyers should be aware that the high-calorie content means portion sizes need to be carefully managed to avoid overfeeding. The flavor is chicken, which generally appeals to most dogs, and the product has received positive reviews for its palatability.

This dog food is made in the USA and adheres to high-quality standards, with a commitment to zero recalls, adding an extra level of assurance. While this product is premium-priced, its high caloric density means it lasts longer than many competitors, providing good value for money. Users should ensure a gradual transition to this food to prevent digestive upset and should follow feeding guidelines closely.

Rating
9.6
Caloric Content
Protein Content
Fat Content

Most important from
771 reviews

Caloric Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Protein Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Fat Content
Aging dogs benefit greatly from this food, as it provides a perfect blend of protein, fat, and calories to combat weight loss.
Digestibility
This food has been transformative for an underweight, malnourished German Shepherd, helping him gain weight, increase energy levels, and improve digestive health.
Flavor and Palatability
Dogs absolutely love the taste of this food, making it a hit even among picky eaters.
Ingredient Quality
Despite its premium price, the food is highly effective and worth the investment, with noticeable improvements in the dog's overall health and appearance.
Supplement Form
For senior dogs with chewing difficulties, the kibble can be easily blitzed in a food processor and mixed with wet food.

Buying Guide for the Best Dog Weight Gainers

Choosing the right weight gainer for your dog is crucial to ensure they gain weight in a healthy and balanced manner. Weight gainers can help dogs who are underweight due to various reasons such as illness, high activity levels, or being a picky eater. When selecting a weight gainer, it's important to consider several key specifications to ensure it meets your dog's specific needs and promotes overall well-being.
Caloric ContentCaloric content refers to the number of calories provided by the weight gainer per serving. This is important because it determines how much energy your dog will get from the supplement. Higher caloric content is suitable for dogs that need to gain weight quickly or have high energy requirements, such as working dogs or those recovering from illness. For dogs that need a more gradual weight gain, a moderate caloric content may be more appropriate. Assess your dog's current weight, activity level, and health status to determine the right caloric content for their needs.
Protein ContentProtein content indicates the amount of protein in the weight gainer, which is essential for muscle development and overall health. High protein content is beneficial for active dogs, growing puppies, or those recovering from surgery or illness, as it helps build and repair tissues. For less active dogs or those with certain health conditions, a moderate protein content may be more suitable. Consider your dog's activity level, age, and health condition when choosing the appropriate protein content.
Fat ContentFat content refers to the amount of fat in the weight gainer, which provides a concentrated source of energy. High fat content is ideal for dogs that need to gain weight quickly or have high energy demands. However, for dogs with certain health issues like pancreatitis, a lower fat content may be necessary. Evaluate your dog's energy needs and health status to select the right fat content for their weight gainer.
DigestibilityDigestibility indicates how easily the weight gainer can be broken down and absorbed by your dog's digestive system. High digestibility ensures that your dog gets the maximum nutritional benefit from the supplement. This is particularly important for dogs with sensitive stomachs or digestive issues. Look for weight gainers with high-quality, easily digestible ingredients to ensure your dog can efficiently utilize the nutrients.
Flavor and PalatabilityFlavor and palatability refer to how appealing the weight gainer is to your dog in terms of taste and smell. This is important because even the most nutritious weight gainer won't be effective if your dog refuses to eat it. Choose a weight gainer with flavors that your dog enjoys, and consider trying a small sample first to ensure they will eat it consistently.
Ingredient QualityIngredient quality refers to the source and type of ingredients used in the weight gainer. High-quality ingredients are more likely to provide the necessary nutrients without causing adverse reactions. Look for weight gainers with natural, whole-food ingredients and avoid those with artificial additives, fillers, or low-quality by-products. This ensures your dog receives the best possible nutrition for healthy weight gain.
Supplement FormSupplement form refers to the physical form of the weight gainer, such as powder, liquid, or chewable treats. The form you choose should be convenient for you to administer and easy for your dog to consume. For example, powders can be mixed with food, liquids can be added to water, and chewable treats can be given directly. Consider your dog's preferences and your own convenience when selecting the supplement form.

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