Diamond Maintenance Adult Dry Dog Food 22/12 for Moderately Active Dogs 40lb Bag
$37.99
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Made to make a difference®, Diamond® Maintenance is designed for moderately active dogs and off-season periods of lower activity. This complete and balanced formula includes chicken protein as the first ingredient for a savory-tasting kibble your dog will love. Formulated with veterinarians, Diamond Maintenance is fortified with essential vitamins, minerals, omega fatty acids and amino acids to help support overall well-being and to help your dog achieve their full potential. Every bag of Diamond Maintenance is proudly made by a family-owned company in the USA with quality ingredients from trusted local and global sources.
Product Dimensions : 27 x 6 x 16 inches; 40 Pounds
Manufacturer recommended age : 1 month and up
Item model number : 101_40_DMD
Department : dog-dry-food
Date First Available : April 25, 2008
Manufacturer : Diamond Pet Foods, Inc.
ASIN : B0018CE5KA
Best Sellers Rank: #4,261 in Pet Supplies (See Top 100 in Pet Supplies) #314 in Dry Dog Food
Customer Reviews: 4.5 4.5 out of 5 stars (2,314) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Made with purposeful, QUALITY INGREDIENTS and GUARANTEED NUTRIENTS including VITAMINS, MINERALS and AMINO ACIDS in every serving
CHICKEN PROTEIN is the first ingredient to help build and maintain LEAN, STRONG MUSCLES
Guaranteed OMEGA FATTY ACIDS to help support a SHINY COAT and HEALTHY SKIN
SUPPLEMENTED with a science-backed blend of PROBIOTICS, coupled with ANTIOXIDANTS, to help support healthy DIGESTION and a strong IMMUNE SYSTEM
FAMILY-OWNED and MADE IN THE USA with quality ingredients from trusted local and global sources
13 reviews for Diamond Maintenance Adult Dry Dog Food 22/12 for Moderately Active Dogs 40lb Bag
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$37.99
Chloe Sizer –
Reliable, Affordable Nutrition for Multi-Dog Homes
I’ve been feeding my four dogs the Diamond Premium Recipe Maintenance formula for several weeks, and after seeing noticeable improvements, I wanted to share an honest, detailed review for anyone considering it.What I Like:Balanced nutritionThis formula is designed for moderately active adult dogs, providing 22% crude protein and 12% crude fat. With four dogs of different sizes and energy levels, it’s been convenient to have one food that works for all of them.Coat and digestive supportIt contains flaxseed, chicken fat, fish meal, and probiotics for healthy digestion and skin. One of my older dogs, whose coat had started to look dull, now has a noticeable shine after about a month.Good valueFor a 40-pound bag, the quality and price point make this a practical option for families with multiple dogs.Made in the USAI appreciate that it’s made in the U.S. using ingredients from trusted sources. Transparency in sourcing matters to me.Easy feeding routineWith four dogs, simplicity is key. Using one reliable adult formula makes feeding time quicker and easier to manage.What to Keep in Mind:IngredientsThe first few ingredients include chicken by-product meal, wheat flour, and ground corn. While this may not appeal to owners who prefer grain-free or single-protein diets, I found the results justified the formula given my dogs’ needs and the price.Activity levelThis food is best suited for moderately active adult dogs. If you have high-performance or senior dogs with specific nutritional requirements, you might want to choose a more specialized formula.Transition periodWhen switching to this food, introduce it gradually over 7 to 10 days to avoid digestive issues. My dogs transitioned easily without any stomach upset.Storage and freshnessThe 40-pound bag lasts a while with four dogs, but I recommend transferring it to a sealed storage bin to maintain freshness.My ExperienceFeeding time is always smooth—my dogs genuinely enjoy the taste and finish their bowls. Over the past few weeks, I’ve noticed healthier coats, more consistent energy, and improved digestion. Managing a multi-dog household, this food has made my routine simpler and more predictable.Final ThoughtsFor anyone managing several dogs or simply looking for an affordable, well-balanced adult formula, Diamond Premium Recipe Maintenance is a dependable option. It’s not a luxury grain-free food, but it offers solid nutrition, consistency, and great value for the price.If I were to rate it, I’d give it 4.5 out of 5 stars, only because some higher-end brands use more premium meats and fewer grains. Still, for a large household with mixed-breed or moderately active dogs, this has been an excellent choice.
Michael C. –
Priced right for Active Healthy Dogs
The dogs love it! Every time the bag arrives the dogs are standing over it ready to plunge in. We have 2 pits 4yrs and a 7mo German shepherd and they all love this food. Was looking for a food and brand that was good for health and coats that was also tasty and never boring, this was it; since they are picky eaters. The price is right and for big dogs, the bag lasts about a month. No diarrhea either. Would recommend for young and older for active and moderately active. They never get tired of it either.
Alisa Smith –
Good food for My dog
I finally got the dog food here it is the 24th and it was delivered on the 19th I finally got it thank you very much
Amazon Customer –
Good value
My dogs like but have had to return due to paper bag being torn or wet during delivery process. Other Diamond foods come in plastic food bags which I switched to and keeps food protected better from infestation, moisture and shelf rot. I switched to the plastic Diamond bag but my dogs also seem to prefer the one on plastic bag. I think it’s fresher.
Melissa –
Good dog food
Dogs love it!
Mary Speers or Angel ( Amazon Affiliate) –
“From Naturals to Maintenance — No Issues at All!”
This dog food honestly surprised me in the best way. Both Apollo ( GSD)and Mr. Chow ( American pit bull/ Labrador) liked it right away, and it’s been really easy on their stomachs. The transition from Diamond Naturals to the Diamond Maintenance formula was super smooth with no issues at all. For a 40 lb bag, the value is great, and my boys are happy — which makes me happy too. Highly recommend for moderately active dogs!
VineReviewer –
Lots of Animals Love to Eat This Dog Chow
I have purchased quite a few of the large bags of Diamond Premium dog chow.My dog is a White German Shepherd and he loves this kibble; he is a rescue.In September 2025 I ordered a few bags and stored one bag in the carport until I needed it. I live rurally, on 50 acres with forest and field. When I went to get the bag, there was a large hole in the bottom, about the size of a dinner plate, and most of the kibble was gone. A wild critter, or critters, ate all of that kibble. I never heard or saw anything. I mention this story because other animals, other than dogs, like this chow too.I give Diamond Premium two thumbs up
Jay –
okay
Decent dog food, but not great. There are better deals
Azu SeSaN –
Excelente producto, me encanta que está elaborado principalmente con harinas animales y no vegetales, el sabor les encantó a mis perros, sin embargo, creo que son alérgicos al pollo porque a todos los soltó del estómago (lo solucioné bajando la ración y con aumento gradual). Son croquetas grandes por lo que no las recomiendo para perros con falta de dientes o razas miniatura a pequeñas.
Cindy Barron Treviño –
The Best
Elizabeth –
Me recomendó mi veterinaria el consumo de esta croqueta.Contiene los nutrientes que requieren mis perrit@s.Les encanta; a mi perrito viejito se las trituro un poco debido a que le faltan algunos dientes.
Claudia –
Lo mandan sin protección adicional y el empaque llego dañado. Por eso le doy 4 estrellas, se pudo tirar alimento en el camino.
Blanca –
Excelente producto es la cuarta vez lo compro por Amazon y aunque está más caro de las anteriores y no hay más opciones,está vez llegó un día después a lo estipulado pero aún así seguiré comprando aunq está vez el proveedor lo mando sin caja como el anterior pero mejoro el precio