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Vapco (#10065)


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Feeding Chart

Daily Serving

Dog Weight - lbs Inactive Dog Active Dog Working Dog
Inactive Dog - Less than 30 minutes of vigorous exercise daily
Active Dog - At least 30 minutes of vigorous exercise daily
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

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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

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    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 193.
Rated 5 out of 5 by from It does the job I bought this and my OTTB definitely gained weight like his life depended on it. But unfortunately I will be taking him off of it as his even temperament has diminished. Now he is a bit to much to handle somedays. Instead of a kick me horse (like the last 3 years I have had him) now I am thinking bigger bit than a snaffle.
Date published: 2019-03-17
Rated 5 out of 5 by from My Horses Love It I started my horses on Fat-Cat a month ago to tone them up for Winter. They look so much better with only using for such a short time.
Date published: 2018-11-06
Rated 4 out of 5 by from Palatable and easy to feed. Great price and quality ingredients. The automatic shipping is convenient.
Date published: 2018-08-25
Rated 5 out of 5 by from Smartpak is ready to use Easy to use since it is measured out. With my horses name printed on the label, there is no confusion who gets what.
Date published: 2018-08-07
Rated 5 out of 5 by from Prefect for weight gain. Changed from Weight Builder to Fat -Cat because I wasn't seeing any weight gain. Fat-Cat worked! Fat-Cat (3 scoops between 2 feedings) plus Grain ration (14%protein 6%fat pellet) and free choice Brome hay. I have backed Fat-Cat to 1scoopx2/day. She's looking good. Will continue/adjust as needed.
Date published: 2018-03-05
Rated 5 out of 5 by from Love! Helped my QH so much! So happy I bought this! It helped my hard keeper stay happy all winter long... and still is! Will buy again!
Date published: 2018-01-14
Rated 5 out of 5 by from Fat Cat Helps! I bought this on the recommendation of my riding instructor. While my mare was initially fussy about the powder's texture, we have seen quick results in putting some weight on both my Morgan and Quarter Horse as we head into winter. Great stuff!
Date published: 2017-11-29
Rated 1 out of 5 by from Terrible This product absolutely sucks I bought this 4 months ago for my ottb and if anything he looks skinnier we have had many vets come out and do many tests and all they say is he's a hard keeper we now switched to weight builder but has yet come hoping for way better results
Date published: 2017-06-17
Rated 5 out of 5 by from Win-win! I bought this a month ago and I'm very happy I did!
Date published: 2017-05-26
Rated 5 out of 5 by from Always Works for me! This is the first product I think about ordering when I need to put weight on a horse. It works! That is why I gave the product 5 stars!
Date published: 2017-05-17
Rated 3 out of 5 by from I bought this for my then 2-year old racehorse; I was hoping that it would help him develop muscle & put on weight. I fed it for nearly 3 months, and I did not notice any improvements in him @ all. I have had better luck in the past month by just putting him on a lunge line with side reins every day.
Date published: 2017-03-15
Rated 1 out of 5 by from Very Dissapointed I bought Fat Cat before giving my 9 yr old OTTB a little break while I was out of town over the holidays to help her keep her body condition and get a little extra support since she was only going to be fed (2x/day) instead of her usual 3x when I'm riding and competing hard. Upon return, I found my horse had dropped weight, her coat was dull, and she was acting aggressive/ucler-y in the field, in her stall, undersaddle, and in the x-ties. All of this being extremely abnormal behavior for her. Unfortunately my 2nd month SmartPaks with this product arrived before I could cancel it. Needless to say, I will not be using this product again, and now have very expensive vet bills and ulcer medicie & supplements to pay for. Not to mention a skinnier, dull coat horse, that can only do light work until she's feeling better. I can't say for sure this supplement had anything to do with it, but that's the only change. She's been back to 3 meals a day since the 1st of the year again, and still exhibiting same behavior and poor performance.
Date published: 2017-01-23
Rated 5 out of 5 by from Works as advertised I bought this for my mare who is a hard keeper based on the advice of my trainer. I give it to her twice a day and so far she has put on about 50 pounds. I am so thrilled with this product that I will put in for another order as soon as this runs out. The best I have given her!
Date published: 2016-10-29
Rated 5 out of 5 by from Works great, fast, and adds shine! Bought this about 2 months ago for my young, still growing, high metabolism QH. She would get a little thinner than I would like when growing through growth spurts. We had her on Essential K (1lb.) daily for a month, liked those results but its expensive at almost $30 a month. Did some research on many different muscle building products and ended up really liking what everyone said about the Fat-Cat, and the price was right. I tried it with still feeding 1/2lb. Essential K and started seeing results almost immediately! And my mare LOVES it! We are experimenting a little at our barn with a few horses feeds: 1 is on 0 E.K.-no supplements, 1 is on 1lb. E.K.-no supplements, 2 on 1/2lb. E.K.-no supplements, and 1 on Fat-Cat with 1/2lb. E.K. Had a non-horse person walk the stalls of those horses in experiment and see which one had the best looking coat-result was a tie between the horse on Fat-Cat/E.K. and the horse on 2lb. E.K.! Will be buying my next supply of Fat-Cat in a couple weeks! Oh and the vet said that if it wasn't coming up on winter he would say that my horse has to go on a diet! And my horse has never been that chunky!
Date published: 2016-10-22
Rated 5 out of 5 by from Works Great! Rescued an aspca horse a month and a half ago and he's already put on enough weight that you can't see his ribs anymore!
Date published: 2016-10-19
Rated 5 out of 5 by from Works Great I started my filly and a mare on this as they were both underweight and didn't have much muscle development. After the short time they have need on it there is a vast improvement. I will be keeping them on it for the foreseeable future.
Date published: 2016-06-06
Rated 5 out of 5 by from Works great I have one horse that is a hard keeper and has skin issues. I use fat cat along with a good pelleted feed and it has helped tremendously.
Date published: 2016-04-28
Rated 5 out of 5 by from Best weight gain on the market. I spent 5 years tracking down a horse who was stolen from me. He was underweight when I found him, which was of no surprise because he has always been a hard keeper. I've used Fat-Cat before to help pack on the pounds when needed, it's always my go to far builder. Two months on it and he looks AMAZING, ready to start working again and build some muscle!! Definitely keep an eye on them though. If you wait too long to take them off you'll come out to a hippo!
Date published: 2016-01-01
Rated 5 out of 5 by from No More Lazy, Skinny OTTB We've had our skinny OTTB gelding on fat supplements for a while now and had noticed very little change. But after we started him on Fat-Cat a little under two months ago, he started gaining some serious weight (over 150 lbs.), muscle, and energy. He looks so much better, and definitely acts like he feels better!
Date published: 2015-12-27
Rated 2 out of 5 by from Didn't see any difference We got this for my horse who is older and having trouble keeping weight on. He's just a little bit too skinny so we just wanted to give him a little extra boost in weight with winter coming. He's been on Fat-Cat for 2 months now and we haven't really seen a difference in his weight. It seems to be palatable and he's been eating it no problem, it just hasn't helped him gain any more weight.
Date published: 2015-12-03
Rated 2 out of 5 by from Fat cat supplement Bought the product to put some weight on my OTTB but 10 days in and he was a raving lunatic! Took him off and promptly went back to being hisself.
Date published: 2015-08-27
Rated 5 out of 5 by from My first choice! I had used fat cat previously and then switched to a different fat supplement because I was given it. I switched back to fat cat as soon as I was done with the other one, this is so much better! My horse maintains his weight or gains on this, the other stuff he couldn't even maintain on. I highly recommend fat cat to all!
Date published: 2015-07-01
Rated 4 out of 5 by from Good muscle builder I switched from Cool Calories to Fat-Cat in order to help my horse with building muscle. It works well, unfortunately it appears my guy (a skinny OTTB) needed the fat content of Cool Calories. If it wasn't an issue of weight maintenance with a hard-keeper, I would consistently buy this supplement.
Date published: 2015-02-27
Rated 5 out of 5 by from fat cat My three horse love this stuff and are doing great.
Date published: 2015-02-11
Rated 5 out of 5 by from Cheap and efficient I've used this for two months to help rehab a young, underweight Friesian mare, and it's done wonders. She's definitely put on the pounds and it's helped her energy levels as well. Her coat also looks wonderful. Great deal for the price.
Date published: 2014-12-15
Rated 5 out of 5 by from Not dissapointed We feed this to our older Thoroughbred (hard keeper) and he hasn't gained weight but he also hasn't lost any so we will continue to feed it! It also has only been about a month!
Date published: 2014-11-01
Rated 5 out of 5 by from picky eater is happy!!! Over the past two years i have tried the Cocosoya and Gleam and Glam supreme supplements for my Tennessee Walker who is a hard keeper and a VERY picky eater. He would always pick at his food, sometimes he would eat most of it but would usually leave some in the bottom of his bucket. Im happy to say that we had a clean, polished bucket from the first night i fed Fat cat to him!!!
Date published: 2014-10-11
Rated 5 out of 5 by from love this product..... Thissis the second time I pupurchase this item I absolutely love it
Date published: 2014-09-24
Rated 4 out of 5 by from Good product I bought this a month ago and saw great results. His coat and body condition are great.
Date published: 2014-09-19
Rated 4 out of 5 by from Great way to keep weight on! Fat cat is a great way to keep weight on during hot summer months
Date published: 2014-08-15
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