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Vapco (#10065)


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Feeding Chart

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Feeding Chart
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Inactive Dog - Less than 30 minutes of vigorous exercise daily
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Working Dog - More than two hours of vigorous exercise daily
This is only a guide. Please consult your veterinarian to determine the perfect feeding amount for your dog.
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Product Overview

Concentrated Natural Muscle Developer

Fat-Cat is a concentrated natural muscle developer with amino acids to support weight gain, coat health, and energy levels. Fat-Cat is a great way to supply muscles with protein building blocks and beneficial vitamins and minerals.
  • Combination of high-quality proteins & essential amino acids for muscle development
  • Includes enzymes to help aid in digestion

Learn More

Key Ingredients


Supplement Facts

Ingredient Name Amount Per Serving
Ingredient Name Amount Per Pound

Ingredient Details


Weight Recommended Amount Loading Amount

How the Ingredients Work


Supporting Success

Supercharge Your Supplements

  • Simplify with SmartPaks | Consistent, Custom, Convenient
    We take the guesswork out of serving sizes, ensuring your horse gets the right amount, every time. SmartPaks have airtight seals to ensure that your horse always has the freshest supplements available. Your horse is unique and his supplements should be too. Choose from over 230 supplements to get everything he needs, nothing he doesn't. We print your horse's name on every Pak so there are no mix-ups, making feeding time fast, accurate and easy! Unlike most buckets, SmartPaks are made from recycled plastic and can be recycled again! We'll send your SmartPaks on time so you never run out, with total flexibility and no commitment. Plus all SmartPaks over $40 receive free ground shipping.


The reviews provided on this website represent the experience of the individual posting the review. We do not adopt, edit, or endorse any of the submissions posted within the reviews section. Rather, the reviews are part of an online community of animal owners that desire to share their particular experience with other individuals. These reviews are not a substitute for discussing the health of your animal with a veterinarian.

SmartPak customers are some of the most conscientious animal owners around. We encourage you to share your experience with the products we sell to help fellow customers to make informed choices for their animals. We do not edit these reviews in any way - they are direct customer-to-customer communication. We do monitor reviews for positive and negative feedback, and use this feedback to improve our selection as well as sharing feedback with product manufacturers to help them improve their products. Please note that we recommend consulting your vet with serious health issues.

Fat-Cat™ is rated 4.6 out of 5 by 197.
Rated 5 out of 5 by from Worked wonderfully - no more bony ponies :) Polo: made a huge difference in a short time with my polo horse who came from Argentina and struggle with the 6-month shift of her winter/summer schedule. Even with blankets she got thin and bony in winter, and this supplement help make a major difference through New England spring and in 2 months also helped her begin shedding to a lovely new coat!
Date published: 2024-05-06
Rated 5 out of 5 by from Immediate results! I added this to my horses smartpak and let me tell you! I had him on another weight gain for a whole month and saw little to negative results, he’s been on this for 2 weeks and he is back to his plump energetic self!! I though I was hitting the dreaded senior weight years at 19 on my thoroughbred but this stuff is a miracle worker!
Date published: 2023-09-13
Rated 5 out of 5 by from Works so well! I absolutely love Fat-Cat. I’m so impressed with the muscle growth and development of my young horse after being on this. I used this with a combination of Smart and Simple DMG and Smart and Simple Vitamin E to help support muscle recovery as well, and the combination has been exceptional. I’m just 2 months (going on 3 now), my young horse has gained muscle in all the gaps in his top line and is filling out beautifully. Everyone has commented on how different he looks now that he has some muscle. I use the 2 scoop dosage, and also incorporated hill work, trot poles, and lunging in the pessoa rig into his routine. In combination with a well thought out exercise routine, this supplement just does wonders. I researched through all the different supplements and I liked that this one has a little bit of fat in it to help horses burn that and build muscle. My horse in particular is a leaner guy so adding in a little fat helped him convert to muscle faster. The price is also fantastic. I’m bumping him down to the maintenance dose of 1 scoop after these fabulous results and will monitor to see if he keeps the muscle on with the lower dose. It’s also very palatable! My horse is picky and he licks the bowl clean.
Date published: 2023-02-27
Rated 5 out of 5 by from Very Happy with this! It’s a long story, but I inherited two geldings, one 12 y/o and one 24 y/o. I couldn’t personally keep them, so they went to somebody. She ended up starving them both, so I made haste to move them. I’ve been feeding this to my senior consistently for 2 weeks and he’s already filled out a good bit. Very happy with this product.
Date published: 2022-12-21
Rated 5 out of 5 by from Great product! Great product and I feel its really working but my horse likes to leave it at the bottom of his feed dish, so I'm switching to something I won't have to babysit for him to eat. Otherwise I feel its great and it was working!
Date published: 2021-07-13
Rated 5 out of 5 by from Great for picky hard to keep thoroughbred! I have an older thoroughbred who is super hard to keep weight on! We started this after finding grains and amounts that seem to work for him. So far we are two months in - he no longer dropping weight, he happily eats it (its pretty sweet - have cherry/almond flavoring...yes I tried it...its not bad!). So far I haven't seen any energy spikes to be concerned with (I know some people have mentioned it) - but TBD once the ring de-ices and we start riding more!
Date published: 2021-02-23
Rated 5 out of 5 by from Actually works I have an older Arabian stallion and an even OLDER Arabian gelding. After last winter they had both lost a lot of weight. Had their teeth floated again, bumped up their feed. They've always had free access to high quality grass hay and they have a pretty good pasture. I added the Fat Cat because they just weren't putting on weight. It took a couple of months but they are both back in really good shape. Much easier to feed than top dressing with oil!
Date published: 2020-09-21
Rated 4 out of 5 by from Slow, but obvious weight gain My OTTB has been on Fat Cat for a little over a month now. I have started noticing an increase in his weight and the appearance of his coat in this last 2 weeks. He is getting noticeably shiny and healthier looking!
Date published: 2020-09-02
Rated 5 out of 5 by from Fat-Cat works well Been feeding 2 months. This is the second time I've used Fat-Cat for a horse in need of weight and muscle. Feeding twice a day (scoops divided into two feedings) with Nutrena Triumph textured 14% protein. Free feed brome hay. Not currently in training though will start soon. Will be adjusting portions soon.
Date published: 2020-09-02
Rated 5 out of 5 by from works great This has always worked for me, been using it for 25 years.
Date published: 2020-07-20
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