Understanding and Managing Weight Gain in Dogs
All too often, humans have a battle with ‘the scales’ from time to time. Having an obese and overweight dog is also far too common, but what if your dog has the opposite problem and actually needs to gain some healthy weight?
The ideal body weight of your dog is an essential measure of his/her general health.
While it’s more common for dogs to need to lose pounds to achieve a healthy weight, some dogs need to add weight for a healthier body composition. This article will shed some light on this important aspect of your furry friend’s well-being.

In this comprehensive guide, we’ll explore why your dog might be underweight, what constitutes an ideal body weight, and provide you with seven practical tips to help your dog gain weight.
Additionally, we’ll address some frequently asked questions (FAQ’s) from concerned pet owners regarding their dog’s healthy weight gain.
Why Is Your Dog Underweight?
Just like humans, dogs can experience fluctuations in their weight, and it’s crucial to understand the reasons behind it and how to help them maintain a healthy body weight. Before diving into the ways to help your dog gain weight, it’s essential to identify the potential reasons behind their underweight condition.
There can be various factors contributing to this issue and understanding them is the first step toward addressing the problem effectively.
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Poor Nutrition
One of the most common causes of underweight dogs is inadequate nutrition. If your dog isn’t receiving the right balance of essential nutrients, vitamins, and minerals, it can lead to weight loss and overall health problems. This can occur due to feeding them low-quality dog food, not providing enough food, or not meeting their specific dietary needs.
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Medical Conditions
Underlying medical conditions can significantly impact a dog’s ability to maintain a healthy weight. Issues such as gastrointestinal problems, thyroid disorders, diabetes, and parasites can interfere with their digestive system and nutrient absorption, leading to weight loss.
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Dental Problems
Dental issues, such as gum disease or tooth decay, can make it painful for your dog to eat. This can result in reduced food intake and, consequently, weight loss. Regular dental check-ups and proper dental care can prevent these problems.
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Stress or Anxiety
Just like humans, dogs can experience stress and anxiety, which can affect their eating habits. Major life changes, trauma, or the presence of new pets or people in their environment can lead to decreased appetite and weight loss.
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Age
As dogs age, their metabolism can slow down, which may lead to weight loss. Older dogs might require a different diet or more frequent, smaller meals to help them maintain a healthy weight.
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Increased Activity
If your dog has recently become more active due to increased exercise or playtime, they may need more calories to maintain their weight. Failure to adjust their diet accordingly can result in weight loss.
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Malabsorption Issues
Some dogs may have malabsorption issues, where their body does not effectively absorb nutrients from their food. This can be due to various reasons, including genetic factors or underlying medical conditions.

What Is the Ideal Body Weight for My Dog?
Determining the ideal body weight for your dog is a critical step in addressing weight gain concerns. It’s not a one-size-fits-all situation, as the ideal weight varies depending on the breed, age, and overall health of your furry companion. However, there are some general guidelines to help you assess whether your dog is at a healthy weight.
Breed-Specific Standards – Different dog breeds have different body types and ideal weight ranges. Consult breed-specific guidelines or speak with your veterinarian to determine the appropriate weight for your dog’s breed.
Body Condition Score – Veterinarians often use a body condition score (BCS) system to evaluate a dog’s weight. This system typically ranges from 1 to 9, with 1 being emaciated and 9 being obese. A healthy dog should ideally fall within the 4 to 5 range on this scale, where you can feel their ribs without seeing them, and they have a visible waist when viewed from above.
Consult Your Veterinarian – When in doubt, it’s always best to consult your veterinarian. They can perform a thorough examination, take your dog’s medical history into account, and provide personalized advice on what constitutes a healthy weight for your specific furry friend.

7 Tips to Help Your Dog Gain Weight
Now that you understand some of the reasons why your dog might underweight and how to determine their ideal body weight, let’s delve into seven practical tips to help your dog gain weight safely and effectively.
- Choose Nutrient-Rich Food – The foundation of healthy weight gain in dogs is providing them with high-quality, nutrient-rich dog food. Look for options that list a high-quality source of protein, healthy fats, and a well-balanced combination of vitamins and minerals. Avoid food with excessive fillers or artificial additives.
- Increase Meal Frequency – Instead of feeding your dog two large meals a day, consider dividing their daily food intake into smaller, more frequent meals. This can help ensure that they receive a consistent supply of nutrients throughout the day, making it easier for them to gain weight.
- Add Supplements – Supplements can be a valuable addition to your dog’s diet to promote weight gain. Omega-3 fatty acids, such as fish oil, can help improve their appetite and overall health. Special note, CBD from hemp can help dogs with low appetite (hunger cues), to increase their desire to eat and put on necessary lean-body-mass. However, always consult your veterinarian before adding supplements to your dog’s diet to ensure they are appropriate for your specific situation.
- Provide High-Calorie Snacks – In addition to regular meals, offer your dog high-calorie snacks or treats between meals. Nutrient-dense options, like lean meats or commercial high-calorie dog treats, can help boost their calorie intake.
- Monitor Their Progress – Keep a close eye on your dog’s weight gain progress. Regularly weigh them and track the changes to ensure they are gaining weight at a healthy rate. If you notice any unexpected weight loss or stagnation, consult your veterinarian for guidance.
- Address Underlying Medical Issues – If you suspect that an underlying medical condition is contributing to your dog’s weight loss, consult your veterinarian promptly. They can perform diagnostic tests and recommend appropriate treatments to address the issue.
- Minimize Stress and Anxiety – Stress and anxiety can inhibit your dog’s ability to gain weight. Create a calm and comfortable environment for them, and if necessary, consider consulting a professional dog trainer or behaviorist to address any behavioral issues contributing to their stress.
Healthy Weight Gain in Dogs
Helping your underweight dog gain weight is a journey that requires patience, diligence, and the right approach.
By identifying the underlying causes of their weight loss, determining their ideal body weight, and implementing the seven tips provided in this guide, you can support your furry friend in achieving and maintaining a healthy weight.
Remember that your holistic veterinarian is your best resource for tailored guidance and advice, so don’t hesitate to seek their assistance in ensuring your dog’s well-being and happiness.

FAQs from Pet Owners About Healthy Weight Gain for Dogs
Let’s address some frequently asked questions from pet owners regarding their dog’s healthy weight gain.
Q1: Can I simply feed my underweight dog more food to help them gain weight?
Feeding your dog more food can be a part of the solution, but it’s crucial to focus on the quality of the food rather than just the quantity. Ensure that the food you provide is nutrient-rich and balanced to meet their specific dietary needs. Consult with your veterinarian to determine the appropriate portion sizes and feeding schedule for your dog.
Q2: Are human foods safe for dogs to help them gain weight?
Some human foods can be safe and beneficial for dogs in moderation. For example, lean meats like chicken and turkey can be a healthy addition to their diet. However, it’s essential to avoid feeding them foods that are toxic to dogs, such as chocolate, grapes, onions, and garlic. Always consult your veterinarian before adding any human foods to your dog’s diet.
Q3: How long does it take for a dog to gain weight?
The time it takes for a dog to gain weight can vary depending on several factors, including the dog’s age, metabolism, and the underlying cause of their underweight condition. In some cases, you may start to see improvement in a few weeks, while in others, it may take several months. It’s essential to be patient and monitor their progress regularly, adjusting their diet and care as needed.
Q4: Should I be concerned if my dog gains weight too quickly?
Yes, rapid weight gain in dogs can be concerning and should be avoided. It can put stress on their organs and lead to health problems. Aim for gradual, steady weight gain, as recommended by your veterinarian, to ensure your dog’s overall health and well-being.
Q5: Are there any breeds that are naturally leaner?
Yes, some dog breeds are naturally leaner than others. Breeds like Greyhounds, Whippets, and Basenjis, for example, tend to have a slender build. It’s essential to consider your dog’s breed and individual characteristics when determining their ideal weight. Consulting with your veterinarian can help ensure you’re making the right choices for your specific breed.
Q6: Can I use weight gain supplements or high-calorie dog food to help my dog gain weight?
Supplements and high-calorie dog food can be helpful tools in helping your dog gain weight, but it’s essential to use them under the guidance of your veterinarian. Not all dogs will need these products, and the wrong supplements or excessive calories can lead to other health issues. Your veterinarian can recommend the most appropriate supplements or high-calorie foods for your dog’s unique needs.
Q7: How can I tell if my dog is gaining muscle or fat?
It’s essential to differentiate between muscle gain and fat gain in your dog. Muscle gain typically results in a more toned and defined appearance, whereas fat gain may lead to a rounder, softer appearance. Consulting with your veterinarian and monitoring your dog’s body condition score can help you determine whether they are gaining healthy muscle or excess fat.
Curtis has been passionate about the health and welfare of animals since his first dog rescue.
After studying Sports Medicine & Biology at the University of Oregon, Curtis went on to excel in a career of Clinical Nutrition, later owning a health care supplement company serving private-practice physicians.
Known for his expansive knowledge of natural health and alternative medicine, Curtis believes that natural plant-based therapies can be applied to veterinary animal care which led him to study the science of Cannabinoid Medicine. His expertise in Functional Medicine led him to formulate a unique hemp-based canine care product, Canine Support Formula, fulfilling a dream to combine natural pet-care strategies with the new therapeutic potential of medical cannabis.
In reverence for his own dog, Parker, Curtis has dedicated his company–K9 Medibles–to improving the health and longevity of all dogs.
To learn more about Curtis and how K9 Medibles can help your dog, click HERE.