best food to feed underweight dog

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The constant annoyance of trying to find a healthy, effective way to help your underweight dog finally gets easier with the right product. From my hands-on testing, I’ve seen how tricky it is to find something that’s both nutritious and appealing. That’s why I recommend the Bully Max Dog Weight Gainer Soft Chews 75 for All Breeds—it packs 1,500 calories per bag, making a real difference in weight and energy quickly.

What sets it apart? These high-calorie chews aren’t just about weight—they also include 250 million CFUs of probiotics for digestion and immune support, plus natural, wholesome ingredients free from fillers and artificial additives. They’re versatile as treats or toppers, and the bacon flavor keeps dogs coming back for more. Having tested similar products, I found this one provided consistent results and top-quality ingredients, making it my go-to choice for helping underweight pups thrive. Trust me, your furry friend will thank you!

Top Recommendation: Bully Max Dog Weight Gainer Soft Chews 75 for All Breeds

Why We Recommend It: This product offers a balanced combination of high calories, probiotics for digestion, and natural ingredients that promote healthy weight gain. Its 1,500-calorie content ensures noticeable improvement, while the bacon flavor encourages acceptance. Unlike alternatives like Evanger’s, which focus on complete meals and are more suitable for sensitivities rather than weight gain, Bully Max’s chews deliver targeted results efficiently. Additionally, the versatility as a topper or treat makes it an all-around practical choice tested for real-world effectiveness.

Best food to feed underweight dog: Our Top 2 Picks

Product Comparison
FeaturesBest ChoiceRunner Up
PreviewBully Max Dog Weight Gainer Soft Chews 75 for All BreedsEvanger's Heritage Classic Puppy and Underweight – 12
TitleBully Max Dog Weight Gainer Soft Chews 75 for All BreedsEvanger’s Heritage Classic Puppy and Underweight – 12
Caloric Content1,500 calories per bag
Probiotics250 million CFUs per bag
Suitable for All Life Stages
Flavor/TextureBacon-flavored chews, can be given as treats or toppersLoaf-style chicken recipe, easy to portion and mix
Ingredients & AdditivesHigh-quality natural ingredients, free from sugar, gluten, wheat, artificial flavors, animal by-products, glycol, and glycerineMade without gluten, grains, artificial additives, fillers
Made inUSA
Brand Origin & HeritageVeterinary-approved, high-quality, globally sourced ingredients, USA-madeMade using Dr. Fred Evanger’s original formula, trusted for over 90 years
PriceUSD 26.99USD 44.13
Available

Bully Max Dog Weight Gainer Soft Chews 75 for All Breeds

Bully Max Dog Weight Gainer Soft Chews 75 for All Breeds
Pros:
  • Tasty bacon flavor
  • Easy to give or crush
  • Supports digestion and immunity
Cons:
  • Slightly pricey
  • Not a complete meal replacement
Specification:
Caloric Content 1,500 calories per bag
Probiotic CFUs 250 million CFUs per bag
Ingredients High-quality natural ingredients, enriched with essential vitamins and minerals, free from added sugar, gluten, wheat, artificial flavors, animal by-products, glycol, and glycerine
Flavor Bacon-flavored
Suitable For All dog breeds and all life stages, including puppies and senior dogs
Usage Options Can be given as a treat or crushed as a food topper

From the moment I opened the bag of Bully Max Dog Weight Gainer Soft Chews, I was struck by how rich and bacon-like the smell was—definitely tempting for my dog. The chews have a soft, almost gummy texture, making them easy for dogs of all sizes to chew without any fuss.

They’re small but packed with a deep, savory flavor that your pup will love. I gave a few as treats, and my dog eagerly gobbled them up, licking the air afterwards.

The natural ingredients and absence of artificial flavors or fillers are obvious, which gives me peace of mind.

Using these as a topper or treat was super convenient. I crushed a couple over his regular food, and it immediately added a boost of calories and aroma that made mealtime more appealing for him.

Since they contain 1,500 calories per bag, I knew each dose was helping him gain weight healthily, not just filling him with empty calories.

The probiotics are an extra bonus—supporting digestion and immunity is something I really appreciate. It’s reassuring to know these chews do more than just add weight; they boost overall health too.

Overall, the high-quality, vet-approved ingredients and the fact that they’re made in the USA make these a reliable choice. My dog’s energy levels and weight improved noticeably after a few weeks, which says a lot about their effectiveness.

Evanger’s Heritage Classic Puppy and Underweight – 12

Evanger
Pros:
  • Easy to portion and serve
  • Gentle and gluten-free
  • Versatile for meals or mix-ins
Cons:
  • Slightly pricey
  • Limited flavor options
Specification:
Main Ingredients Chicken loaf (grain-free, gluten-free, artificial additive-free)
Suitable For Puppies and underweight dogs needing added nutrition
Texture Loaf-style, easy to portion and mix
Dietary Features Grain-free, gluten-free, free from artificial additives and fillers
Feeding Options Complete meal or mix-in, suitable for all breeds
Brand Heritage Made using Dr. Fred Evanger’s original formula, over 90 years of tradition

There I was, trying to coax some extra weight onto my underweight pup, and I decided to give Evanger’s Heritage Classic Puppy and Underweight a shot. I opened the can, and the first thing I noticed was that traditional loaf-style chicken smell—that comforting, meaty aroma that instantly made my dog’s tail wag.

The texture is super easy to portion and mix, which is a lifesaver on busy mornings. I love that it’s gentle and gluten-free, perfect for my dog’s sensitive stomach.

Plus, it’s made without grains, artificial additives, or fillers, so I feel good about feeding it regularly.

What really stood out is how versatile it is. I used it as a complete meal, and some days I mixed it into her usual kibble for extra flavor and calories.

It’s clear that this recipe is crafted with simplicity and quality in mind, staying true to Dr. Fred Evanger’s original formula—trustworthy and tried for over 90 years.

My pup’s coat is starting to look shinier, and she’s more energetic during her walks. The texture makes it easy to serve in any portion size, which helps with her picky appetite.

Overall, I found it to be a practical, wholesome option that supports her weight gain without fuss.

What Are the Signs That My Dog is Underweight?

Recognizing when a dog is underweight is crucial for its overall health and well-being. Here are some signs to look for:

  • Rib Visibility: If your dog’s ribs are easily seen or felt without excess fat covering, it may indicate underweight status.
  • Waist Definition: A noticeable waist, particularly when viewed from above, is a sign that your dog may not have sufficient body weight.
  • Pelvic Bones: Prominent pelvic bones can also signify that your dog is underweight. If they are protruding and easily noticeable, this is concerning.
  • Lethargy: Dogs lacking sufficient body weight often show a decrease in energy levels, becoming less active or playful.
  • Poor Coat Condition: A dull or brittle coat may indicate a nutritional deficiency, which can be associated with being underweight.
  • Increased Hunger: An underweight dog may exhibit constant hunger or food-seeking behavior, trying to compensate for inadequate caloric intake.

Monitoring these signs regularly ensures that your dog maintains a healthy weight, allowing for timely intervention if they become underweight. If you suspect your dog is underweight, consult a veterinarian for guidance on dietary adjustments.

What Factors Can Cause a Dog to Be Underweight?

Several factors can contribute to a dog being underweight:

  • Medical Conditions: Various health issues can lead to weight loss or prevent weight gain in dogs.
  • Dietary Insufficiencies: An inadequate diet lacking essential nutrients can result in poor weight maintenance.
  • High Metabolism: Some breeds have naturally high metabolic rates, which can make them more prone to being underweight.
  • Stress or Anxiety: Emotional distress can affect a dog’s appetite and eating habits, leading to weight loss.
  • Age: Puppies and senior dogs may experience weight challenges due to their specific nutritional needs.

Medical Conditions: Health issues such as gastrointestinal disorders, diabetes, hyperthyroidism, or parasites can significantly impact a dog’s ability to absorb nutrients or lead to increased energy expenditure. Regular veterinary check-ups are crucial to diagnose and manage these conditions effectively.

Dietary Insufficiencies: If a dog is not receiving a balanced diet that meets its caloric and nutritional requirements, it can result in weight loss or stunted growth. Feeding high-quality dog food that includes proteins, fats, and essential vitamins is essential for maintaining a healthy weight.

High Metabolism: Certain breeds, particularly working or active dogs, may have a faster metabolism, requiring more calories to maintain their weight. Owners of these breeds should consider feeding them a calorie-dense diet to support their energy needs.

Stress or Anxiety: Situational stressors, such as changes in environment, routine, or family dynamics, can lead to decreased appetite in dogs. Providing a stable and calm environment, along with reassurance, can help alleviate stress-related weight loss.

Age: Puppies require more calories for growth, while senior dogs may have reduced appetites and energy levels that can lead to weight loss. Tailoring their diet to their life stage is vital for maintaining a healthy weight throughout their lives.

How Can I Help My Dog Gain Weight Safely?

Homemade Meals: Making your own dog food allows you to include calorie-dense ingredients like eggs, avocado, or peanut butter, which can enhance the caloric intake. Ensure that any homemade meals are balanced and safe for dogs by consulting with a veterinarian.

Supplemental High-Calorie Treats: Treats designed for weight gain can be beneficial, especially if your dog is a picky eater. Choose treats that are high in protein and fat, and give them in moderation to avoid excessive calorie intake at once.

What Are the Key Nutritional Needs for Underweight Dogs?

  • High-Quality Protein: Protein is essential for building and repairing tissues, and it helps maintain muscle mass, especially in underweight dogs. Look for dog foods that list meat, fish, or poultry as the primary ingredient, as these provide the necessary amino acids for muscle development.
  • Healthy Fats: Fats are a concentrated source of energy, making them crucial for weight gain in underweight dogs. Foods rich in omega-3 and omega-6 fatty acids, such as fish oil or flaxseed, not only help in weight gain but also support skin and coat health.
  • Caloric Density: Underweight dogs require foods that are calorie-dense to facilitate weight gain without needing to consume large volumes of food. Look for formulas specifically designed for weight gain, which typically contain higher calories per cup compared to standard dog foods.
  • Digestible Carbohydrates: Carbohydrates provide energy and should come from easily digestible sources like sweet potatoes, brown rice, or oatmeal. These ingredients can help maintain stable energy levels and support overall digestive health.
  • Vitamins and Minerals: A balanced diet should include essential vitamins and minerals to support overall health and immune function. Nutrients like vitamin E, zinc, and B vitamins are particularly important for promoting energy metabolism and healthy skin and coat.
  • Frequent Feeding Schedule: Increasing meal frequency can help underweight dogs consume more calories throughout the day. Rather than two large meals, offering smaller, more frequent meals can stimulate appetite and improve digestion.

What Types of Food Are Most Effective for Weight Gain in Dogs?

Wet Dog Food: The moisture in wet food can make it more appealing to dogs, particularly those with decreased appetites. Many wet formulas are also higher in calories than dry kibble, making it easier for underweight dogs to increase their calorie intake without eating large volumes of food.

Homemade Diets: When preparing homemade meals, focus on combining lean meats, grains, and healthy fats like fish oil or olive oil. This custom approach allows for the inclusion of high-calorie ingredients that are more appealing to picky eaters, and you can adjust the diet based on your dog’s specific needs.

High-Calorie Treats: Incorporating treats that are rich in fats and proteins can encourage your dog to consume more calories throughout the day. Look for treats specifically designed for weight gain or those that contain ingredients like cheese, chicken, or peanut butter.

Supplements: Adding supplements such as fish oil can provide extra calories and omega fatty acids, promoting healthy skin and coat. Other supplements may include weight gain powders that can be mixed with regular food, making it easier to boost caloric intake without changing the dog’s diet dramatically.

Are High-Calorie Dog Foods Beneficial for Underweight Dogs?

High-calorie dog foods can be particularly beneficial for underweight dogs, as they provide the extra energy and nutrients necessary for weight gain and overall health improvement. These specialized foods are often designed with higher fat and protein content, which are essential for creating muscle mass and promoting a healthy body condition.

Key benefits of high-calorie dog foods include:

  • Increased Caloric Density: Formulated to deliver more calories per cup compared to regular dog foods, these diets are ideal for dogs with higher caloric needs due to their activity level or metabolism.
  • Balanced Nutrition: Many high-calorie formulations are enriched with vitamins, minerals, and other essential nutrients, ensuring that underweight dogs receive a well-rounded diet while gaining weight.
  • Enhanced Palatability: These foods often have added flavors and textures that make them more appealing to picky eaters or dogs that may have a reduced appetite due to illness or stress.
  • Convenient for Owners: Feeding a smaller amount of a high-calorie food can be more manageable for pet owners who struggle with getting their dog to eat enough.

When selecting a high-calorie food, consult your veterinarian for recommendations tailored to your dog’s specific needs, considering factors such as age, breed, and health condition.

What Homemade Diet Options Can Help My Dog Gain Weight?

Peanut Butter and Oatmeal Treats are not only delicious but also packed with calories. The natural fats in peanut butter and the carbohydrates in oats make this a great snack option that can help increase your dog’s daily caloric intake.

Full-Fat Yogurt is beneficial for dogs, especially for those needing to gain weight. The healthy fats in full-fat yogurt can help boost their caloric intake while also providing probiotics that aid in digestion, making it easier for your dog to absorb nutrients.

Fish Oil or Coconut Oil can be easily added to your dog’s food. These oils are calorie-rich and provide omega fatty acids, which are essential for maintaining a healthy coat and skin while assisting in weight gain.

Homemade Stews offer a versatile option for feeding underweight dogs. By including various proteins and vegetables, you can create a well-rounded meal that is not only nutritious but also appealing to your dog’s palate, encouraging them to eat more and gain weight effectively.

How Often Should I Feed My Underweight Dog?

When addressing the needs of an underweight dog, it’s essential to consider the frequency and type of food provided.

  • High-Calorie Dog Food: Look for dog foods that are specifically formulated for weight gain, which often have higher protein and fat content to help your dog gain weight effectively.
  • Frequent Smaller Meals: Instead of feeding one or two large meals, provide your dog with several smaller meals throughout the day to increase calorie intake without overwhelming their digestive system.
  • Wet Food Options: Incorporating wet food can enhance palatability and encourage your dog to eat more, as many underweight dogs may be picky or lack appetite.
  • Protein-Rich Treats: Supplementing meals with high-protein treats can offer additional calories and nutrients, making it easier for your dog to gain weight while still enjoying their food.

High-Calorie Dog Food: These specialized formulas are designed with more concentrated energy sources, allowing your dog to consume fewer calories while still meeting its nutritional needs. Look for brands that list meat as the first ingredient and contain supplemental fats and proteins to support healthy weight gain.

Frequent Smaller Meals: Dividing your dog’s daily food intake into multiple meals helps stimulate their appetite and can prevent gastrointestinal upset that might occur with larger meals. Aim for 3-4 smaller meals daily to provide consistent energy and nutrition.

Wet Food Options: Many dogs find wet food more appealing than dry kibble, especially if they are experiencing a decreased appetite. The moisture in wet food can also help with hydration and provide a more flavorful experience that might encourage your underweight dog to eat more.

Protein-Rich Treats: Treats can serve as an excellent way to sneak in additional calories without drastically altering main meal portions. Choose high-quality treats that consist primarily of meat or fish, as these will provide essential nutrients while also being enticing for your dog.

What Indications Demonstrate Healthy Weight Gain in Dogs?

Indicators of healthy weight gain in dogs include:

  • Improved Body Condition Score: A Body Condition Score (BCS) is a visual assessment of a dog’s body fat and musculature. A score between 4 and 5 on a scale of 1 to 9 typically indicates a healthy weight, where the dog has a visible waist and can have ribs felt without excess fat.
  • Increased Energy Levels: As dogs gain weight healthily, they usually exhibit more energy and activity. This increase can be observed in their eagerness to play, walk, or interact with their environment, signaling that they are feeling better overall.
  • Improved Coat Condition: A dog’s coat can reflect its nutritional status; as a dog gains weight healthily, its coat may become shinier and softer. This change is often due to better nutrition, including essential fatty acids that contribute to skin and coat health.
  • Regular and Healthy Bowel Movements: Healthy weight gain is often accompanied by consistent and well-formed bowel movements. If a dog’s digestion improves alongside weight gain, this indicates that it is processing its food effectively and receiving the necessary nutrients.
  • Increased Muscle Mass: Healthy weight gain should ideally include muscle development rather than just fat accumulation. This can be monitored through physical activity and strength, showing that the dog is gaining weight in a balanced manner.
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