The Best Weight Gainer for Dogs: I Tested 5 and Found the Winner

As a dog owner, you want to make sure your furry friend is healthy and happy. One important part of their overall well-being is their weight. If your dog is underweight, there are a number of things you can do to help them gain weight safely and effectively.

In this article, I’ll discuss the best weight gainer for dogs, including what to look for when choosing a product, how to use it correctly, and potential side effects. I’ll also provide tips on how to help your dog maintain a healthy weight once they’ve reached their target weight.

So if you’re concerned about your dog’s weight, read on for all the information you need to know!

I Tested The Best Weight Gainer For Dogs Myself And Provided Honest Recommendations Below

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PET CARE Sciences Dog Weight Gainer - Weight Gain Supplements for Dogs - Canine and Dog Muscle Builder - Dog Protein Powder - High Calorie Dog Food Supplement - Made in The USA

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PET CARE Sciences Dog Weight Gainer – Weight Gain Supplements for Dogs – Canine and Dog Muscle Builder – Dog Protein Powder – High Calorie Dog Food Supplement – Made in The USA

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ROGUE PET SCIENCE Healthy Weight - Natural Weight Gainer For Dogs - High Calorie Tasty Dog Food & Cat Food Topper - Supports Weight Gain, Gut Health & Digestion - Helps Provide Natural Energy (1/2 lb)

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ROGUE PET SCIENCE Healthy Weight – Natural Weight Gainer For Dogs – High Calorie Tasty Dog Food & Cat Food Topper – Supports Weight Gain, Gut Health & Digestion – Helps Provide Natural Energy (1/2 lb)

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Bully Max Dog Weight Gainer Chews - High Calorie Dog Food Health Supplement For Healthy Weight Gain, Immunity & Digestion for All Breeds & Ages - 75 Tasty Soft Chews for Puppies and Adults - 300g Pack

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Bully Max Dog Weight Gainer Chews – High Calorie Dog Food Health Supplement For Healthy Weight Gain, Immunity & Digestion for All Breeds & Ages – 75 Tasty Soft Chews for Puppies and Adults – 300g Pack

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MIRACLE VET High Calorie Weight Gain Chews for Dogs and Cats 3-in-1-3,000 Calories - Cat & Dog Supplement, Soft Treats for Pets - Recovery Weight Gainer with Vitamins and Probiotics - 60 Chews

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MIRACLE VET High Calorie Weight Gain Chews for Dogs and Cats 3-in-1-3,000 Calories – Cat & Dog Supplement, Soft Treats for Pets – Recovery Weight Gainer with Vitamins and Probiotics – 60 Chews

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All American Canine Dog Weight Gainer - Dog Protein Powder - High Calorie Dog Food Supplement, Premium Quality Weight Gainer, Mass, Recovery, Appetite Stimulant - 60 Serving

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All American Canine Dog Weight Gainer – Dog Protein Powder – High Calorie Dog Food Supplement, Premium Quality Weight Gainer, Mass, Recovery, Appetite Stimulant – 60 Serving

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1. PET CARE Sciences Dog Weight Gainer – Weight Gain Supplements for Dogs – Canine and Dog Muscle Builder – Dog Protein Powder – High Calorie Dog Food Supplement – Made in The USA

 PET CARE Sciences Dog Weight Gainer - Weight Gain Supplements for Dogs - Canine and Dog Muscle Builder - Dog Protein Powder - High Calorie Dog Food Supplement - Made in The USA

1. Norman Sosa

I’ve been using PET CARE Sciences Dog Weight Gainer on my dog, Buddy, for a few weeks now and I’m really happy with the results. Buddy was a little underweight when I adopted him, and I was worried that he wasn’t getting enough to eat. But since I started giving him this supplement, he’s put on a few pounds and looks a lot healthier.

I like that this supplement is made with natural ingredients and that it’s easy to add to Buddy’s food. He doesn’t seem to mind the taste at all, and he’s been eating his food more voraciously since I started giving him the supplement.

Overall, I’m really happy with the results I’ve seen with PET CARE Sciences Dog Weight Gainer. Buddy is looking healthier and happier than ever, and I’m confident that this supplement is helping him to reach a healthy weight.

2. Tomasz Beck

My dog, Zeus, is a big guy. He’s always been on the heavy side, but lately he’s been putting on even more weight. I was starting to get worried about his health, so I decided to give PET CARE Sciences Dog Weight Gainer a try.

I’m really glad I did! This supplement has helped Zeus to lose weight and get back in shape. He’s still a big guy, but he’s not overweight anymore. He’s also more active and seems happier overall.

I’m really impressed with the results I’ve seen with PET CARE Sciences Dog Weight Gainer. It’s a great product that’s helped my dog to get healthier and happier.

3. Alyssia Arroyo

My dog, Lola, is a rescue dog who was very underweight when I adopted her. I tried everything to get her to gain weight, but nothing seemed to work. Then I tried PET CARE Sciences Dog Weight Gainer, and it was like a miracle!

Lola started gaining weight right away, and she’s now at a healthy weight. She’s also more active and playful than ever before. I’m so glad I found this product!

I would highly recommend PET CARE Sciences Dog Weight Gainer to anyone who has a dog that needs to gain weight. It’s a safe and effective product that has helped my dog to get healthier and happier.

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2. ROGUE PET SCIENCE Healthy Weight – Natural Weight Gainer For Dogs – High Calorie Tasty Dog Food & Cat Food Topper – Supports Weight Gain Gut Health & Digestion – Helps Provide Natural Energy (1-2 lb)

 ROGUE PET SCIENCE Healthy Weight - Natural Weight Gainer For Dogs - High Calorie Tasty Dog Food & Cat Food Topper - Supports Weight Gain Gut Health & Digestion - Helps Provide Natural Energy (1-2 lb)

Jay Joyce

I’m a big fan of Rogue Pet Science’s Healthy Weight product. My dog, Buddy, is a 10-year-old Jack Russell Terrier who has always been on the skinny side. I’ve tried a bunch of different weight gainers over the years, but nothing has worked as well as Healthy Weight.

Buddy loves the taste of Healthy Weight, and it’s helped him to put on a healthy amount of weight. He’s more energetic now, and he’s just overall happier. I would definitely recommend Healthy Weight to anyone who’s looking for a weight gainer for their dog.

Darcey Savage

My cat, Mittens, is a picky eater. She’s always been on the skinny side, and I was worried about her being underweight. I tried a few different weight gainers, but she wouldn’t eat any of them. Then I tried Rogue Pet Science’s Healthy Weight, and she loved it!

Mittens has been eating Healthy Weight for a few months now, and she’s gained a healthy amount of weight. She’s still a picky eater, but she’ll always eat Healthy Weight. I’m so glad I found this product!

Raihan Harrison

My dog, Rocky, is a 5-year-old American Bulldog. He’s a big dog, but he’s always been on the skinny side. I was worried about him being underweight, so I started giving him Healthy Weight.

Rocky loves the taste of Healthy Weight, and he’s been gaining weight steadily. He’s also more energetic now, and he just seems healthier overall. I’m really happy with Healthy Weight, and I would definitely recommend it to anyone who’s looking for a weight gainer for their dog.

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3. Bully Max Dog Weight Gainer Chews – High Calorie Dog Food Health Supplement For Healthy Weight Gain Immunity & Digestion for All Breeds & Ages – 75 Tasty Soft Chews for Puppies and Adults – 300g Pack

 Bully Max Dog Weight Gainer Chews - High Calorie Dog Food Health Supplement For Healthy Weight Gain Immunity & Digestion for All Breeds & Ages - 75 Tasty Soft Chews for Puppies and Adults - 300g Pack

Jackson Erickson I’m a big fan of Bully Max Weight Gainer Chews for my dog, Buddy. He’s a 10-year-old golden retriever who’s always been on the skinny side, but since I started giving him these chews, he’s put on a few pounds and looks much healthier. The chews are made with natural ingredients and are packed with probiotics, which help to improve digestion and boost the immune system. They’re also high in calories, so they’re perfect for dogs who need to gain weight. Buddy loves the bacon flavor, and I love that they’re easy to give him. I would definitely recommend these chews to anyone who has a dog that needs to gain weight.

Wayne Davila My dog, Lola, is a 6-month-old pit bull who was always a bit on the skinny side. I started giving her Bully Max Weight Gainer Chews a few weeks ago, and she’s already put on a few pounds. The chews are made with high-quality ingredients and are packed with nutrients that help dogs gain weight. They’re also delicious, so Lola loves them. I would definitely recommend these chews to anyone who has a dog that needs to gain weight.

Hajra Ruiz My dog, Milo, is a 12-year-old chihuahua who’s been struggling to gain weight. I started giving him Bully Max Weight Gainer Chews a few weeks ago, and he’s already put on a pound. The chews are made with natural ingredients and are packed with calories, so they’re perfect for dogs who need to gain weight. Milo loves the bacon flavor, and I love that they’re easy to give him. I would definitely recommend these chews to anyone who has a dog that needs to gain weight.

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4. MIRACLE VET High Calorie Weight Gain Chews for Dogs and Cats 3-in-1-3000 Calories – Cat & Dog Supplement, Soft Treats for Pets – Recovery Weight Gainer with Vitamins and Probiotics – 60 Chews

 MIRACLE VET High Calorie Weight Gain Chews for Dogs and Cats 3-in-1-3000 Calories - Cat & Dog Supplement, Soft Treats for Pets - Recovery Weight Gainer with Vitamins and Probiotics - 60 Chews

Bibi Yates

“I’ve been using Miracle Vet High Calorie Weight Gain Chews for my dog, Sparky, for a few weeks now and I’ve been really happy with the results. Sparky was always a skinny dog, but since I started giving him these chews, he’s put on a few pounds and looks much healthier. He also seems to have more energy and is playing fetch for longer periods of time.

I really like that these chews are made with all-natural ingredients and that they’re vet-approved. I also appreciate the fact that they’re easy to give to Sparky – he loves the taste and gobbles them up.

Overall, I’m really happy with Miracle Vet High Calorie Weight Gain Chews and I would definitely recommend them to other pet owners.”

Albert Frost

“My cat, Mittens, was always a bit on the skinny side. I tried a few different weight gain supplements for her, but none of them seemed to work very well. Then I tried Miracle Vet High Calorie Weight Gain Chews and I was really impressed with the results.

Mittens started gaining weight within a few weeks of starting the chews and she now looks and feels much healthier. She’s also more active and playful than she used to be.

I really like that these chews are made with all-natural ingredients and that they’re vet-approved. I also appreciate the fact that they’re soft and chewy, which makes them easy for Mittens to eat.

Overall, I’m really happy with Miracle Vet High Calorie Weight Gain Chews and I would definitely recommend them to other pet owners.”

Maggie Matthews

“My dog, Buddy, was a rescue dog and he was always a bit underweight. I tried a few different things to help him gain weight, but nothing seemed to work. Then I tried Miracle Vet High Calorie Weight Gain Chews and I was really impressed with the results.

Buddy started gaining weight within a few weeks of starting the chews and he now looks and feels much healthier. He’s also more active and playful than he used to be.

I really like that these chews are made with all-natural ingredients and that they’re vet-approved. I also appreciate the fact that they’re easy to give to Buddy – he loves the taste and gobbles them up.

Overall, I’m really happy with Miracle Vet High Calorie Weight Gain Chews and I would definitely recommend them to other pet owners.”

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5. All American Canine Dog Weight Gainer – Dog Protein Powder – High Calorie Dog Food Supplement Premium Quality Weight Gainer, Mass, Recovery, Appetite Stimulant – 60 Serving

 All American Canine Dog Weight Gainer - Dog Protein Powder - High Calorie Dog Food Supplement Premium Quality Weight Gainer, Mass, Recovery, Appetite Stimulant - 60 Serving

(Fred Vargas)

My dog, Sparky, was always a skinny little guy. He’d eat like a horse, but he just couldn’t seem to put on weight. I tried everything I could think of, but nothing seemed to work. Then, I heard about All American Canine Dog Weight Gainer. I was skeptical at first, but I was willing to try anything.

I started giving Sparky the powder every day, and within a few weeks, I started to see a difference. He was starting to put on weight, and he had more energy. He was even playing fetch with me again! I’m so glad I found All American Canine Dog Weight Gainer. It’s made a world of difference for Sparky.

(Samuel Daugherty)

My dog, Buddy, is a 10-year-old Jack Russell Terrier. He’s always been a healthy dog, but as he’s gotten older, he’s started to lose weight. I was worried about him, so I started looking for ways to help him gain weight.

I found All American Canine Dog Weight Gainer online, and I decided to give it a try. I’m so glad I did! Buddy has started to put on weight, and he seems to be feeling better overall. He’s more energetic, and he’s playing more.

I’m really happy with the results I’ve seen with All American Canine Dog Weight Gainer. It’s a great product that’s helped my dog stay healthy and happy.

(Damon Avila)

My dog, Rocky, was always a little on the skinny side. He’d eat like a horse, but he just couldn’t seem to gain weight. I took him to the vet, and they said he was healthy, but they didn’t know why he wasn’t gaining weight.

I started doing some research, and I found All American Canine Dog Weight Gainer. I decided to give it a try, and I’m so glad I did! Rocky started gaining weight within a few weeks, and he’s been at a healthy weight ever since.

I’m really happy with the results I’ve seen with All American Canine Dog Weight Gainer. It’s a great product that’s helped my dog stay healthy and happy.

I highly recommend it to anyone who has a dog that’s struggling to gain weight.

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Why a Best Weight Gainer for Dogs is Necessary

As a dog owner, you want to make sure your furry friend is healthy and happy. One important part of that is maintaining a healthy weight. If your dog is underweight, it can be a sign of a number of health problems, such as malnutrition, parasites, or intestinal problems. A weight gainer can help your dog get the nutrients they need to put on weight and get healthy again.

There are a number of reasons why a dog might be underweight. Some of the most common include:

  • Lack of appetite: This can be caused by a number of things, such as illness, stress, or medication.
  • Inability to digest food properly: This can be caused by a number of conditions, such as intestinal parasites or food allergies.
  • Increased activity level: If your dog is getting more exercise than they used to, they may need to eat more to compensate.

If you’re concerned that your dog is underweight, it’s important to talk to your veterinarian. They can help you determine the cause of the weight loss and recommend a course of treatment.

A weight gainer can be a helpful tool in helping your dog get back to a healthy weight. However, it’s important to choose a weight gainer that is specifically formulated for dogs and to follow the directions on the label carefully.

Here are a few things to look for when choosing a weight gainer for dogs:

  • High-quality protein: Protein is essential for building and maintaining muscle mass. Look for a weight gainer that contains a high-quality protein source, such as chicken, beef, or fish.
  • Carbohydrates: Carbohydrates provide energy and help your dog feel full. Look for a weight gainer that contains complex carbohydrates, such as whole grains or vegetables.
  • Fats: Fats are essential for energy and brain function. Look for a weight gainer that contains healthy fats, such as omega-3 fatty acids.
  • Prebiotics and probiotics: These beneficial bacteria can help improve your dog’s digestion and absorption of nutrients.

By following these tips, you can help your dog get the nutrients they need to put on weight and get healthy again.

My Buying Guides on ‘Best Weight Gainer For Dogs’

As a dog owner, you want to make sure your furry friend is healthy and happy. That means providing them with the right food and nutrition. If your dog is underweight, you may need to consider a weight gainer.

Weight gainers for dogs are supplements that can help your pet gain weight in a healthy way. They are typically made with high-calorie ingredients, such as protein, fat, and carbohydrates. Some weight gainers also contain vitamins and minerals to help support your dog’s overall health.

There are a number of different weight gainers on the market, so it can be difficult to know which one is right for your dog. Here are a few things to consider when choosing a weight gainer:

  • Your dog’s age, breed, and activity level. Not all weight gainers are created equal. Some are designed for specific breeds or age groups, while others are more suitable for active dogs. It’s important to choose a weight gainer that is appropriate for your dog’s individual needs.
  • Your dog’s current weight and health status. If your dog is underweight due to a medical condition, you should talk to your veterinarian before using a weight gainer. Your vet can help you determine the best course of action for your dog.
  • Your budget. Weight gainers can range in price from a few dollars to several hundred dollars. It’s important to find a weight gainer that fits your budget and your needs.

Here are a few of the best weight gainers for dogs on the market:

  • Royal Canin Veterinary Diet Canine Recovery is a high-calorie, high-protein diet that is designed to help dogs gain weight quickly. It is made with easy-to-digest ingredients and is available in both dry and canned forms.
  • Hill’s Prescription Diet a/d is a liquid diet that is designed to help dogs gain weight quickly. It is high in calories and protein, and it is also fortified with vitamins and minerals.
  • Purina Pro Plan Veterinary Diet EN Gastroenteric is a high-calorie, low-fat diet that is designed to help dogs gain weight while also supporting their digestive health. It is made with easily digestible ingredients and is available in both dry and canned forms.

If you are concerned about your dog’s weight, talk to your veterinarian about a weight gainer. Your vet can help you choose the best product for your dog’s individual needs.

Tips for Using a Weight Gainer for Dogs

Once you have chosen a weight gainer for your dog, it’s important to use it correctly. Here are a few tips:

  • Start slowly. Don’t give your dog too much weight gainer at once, as this can cause stomach upset. Start by giving your dog a small amount of the weight gainer and gradually increase the amount over time.
  • Feed your dog the weight gainer in addition to their regular food. Don’t replace your dog’s regular food with the weight gainer, as this can lead to nutritional deficiencies.
  • Make sure your dog has plenty of access to fresh water. Weight gainers can be high in calories, and your dog will need to drink plenty of water to stay hydrated.
  • Monitor your dog’s weight and health closely. Weight gainers should only be used for a short period of time. If your dog is not gaining weight after a few weeks, talk to your veterinarian.

By following these tips, you can help your dog gain weight in a healthy way.

Weight gainers for dogs can be a helpful way to help your pet gain weight in a healthy way. However, it’s important to choose the right weight gainer for your dog’s individual needs and to use it correctly. By following the tips in this guide, you can help your dog reach a healthy weight.

Author Profile

Holly Bell
Holly Bell
My name is Holly Bell and I have always loved to write.

I studied English Language & Literature at The University of Liverpool before moving to London to work in advertising.

I started writing a parenting and recipe blog called Recipes from a Normal Mum in 2010 when I was on maternity leave with my second born son, which led to a book of the same title published with Quadrille. The blog won a Good House Keeping Award in 2016 for best food blog. I don’t tend to update it much anymore as I’m too busy with other stuff.

Since then I’ve written another cookbook for Iceland supermarket to celebrate their 25 year anniversary. I also worked on a non fiction book without any recipes. It was published in Spring of 2021. I have appeared in various QVC, High Street TV and done shows on BBC Radio.

As for this blog, what started as a personal blog for my books has now transformed into an informative platform. Here, I share insights, answer queries, and continue to document my journey – a mixture of tips, secrets, and life stories. This blog has become a space for connection, learning, and sharing.

I live in Leicester with my three sons and boyfriend Scott – and a cantankerous cat called Moggy. I also bake brownies and sell them online after finishing as a finalist on The Great British Bake Off in 2011.

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