Diamond Maintenance Formula Adult Dry Cat Food

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40-lb bag
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Give your feline friend the precious gift of premium nutrition with Diamond Maintenance Formula Adult Dry Food. Formulated from the highest quality ingredients, this food is made to make a difference with carefully determined levels of protein, fat and other vital nutrients to support your moderately active pal’s ideal body condition. Essential minerals are chelated with amino acids to optimize their absorption and ensure maximum benefit. It’s also fortified with antioxidants and fiber for digestive and immune system support to help make sure your best friend gets all the nutrients she needs to stay healthy and happy.

Key Benefits
  • Formulated with 22% protein, 12% fat and other vital nutrients to support an ideal body condition for your moderately active feline.
  • Chelated minerals help ensure maximum absorption of vital nutrients; powerful antioxidants including selenium and vitamin E help support his immune system and overall health.
  • Omega-3 and omega-6 fatty acids provide support for healthy skin, a shiny coat and overall well-being, while taurine helps to support your pal’s overall health.
  • Made with ingredients from trusted and sustainable sources for complete and balanced nutrition with essential vitamins and nutrients.
  • Made in the USA by a family owned and run company with the most scientifically advanced food safety protocols because your pal deserves nothing but the best!

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  • Item Number
  • Weight
    40.0 pounds
  • Food Form

    Dry Food

  • Lifestage


  • Made in

    United States

Nutritional Info

Chicken By-Product Meal, Whole Grain Ground Corn, Wheat Flour, Chicken Fat (Preserved With Mixed Tocopherols), Corn Gluten Meal, Ground White Rice, Dried Beet Pulp, Natural Chicken Flavor, Flaxseed, Fish Meal, Sodium Bisulfate, Potassium Chloride, Choline Chloride, Dl-Methionine, Taurine, Dried Lactobacillus Plantarum Fermentation Product, Dried Bacillus Subtilis Fermentation Product, Dried Lactobacillus Acidophilus Fermentation Product, Dried Enterococcus Faecium Fermentation Product, Dried Bifidobacterium Animalis Fermentation Product, Zinc Proteinate, Vitamin E Supplement, Niacin, Manganese Proteinate, Copper Proteinate, Zinc Sulfate, Manganese Sulfate, Copper Sulfate, Thiamine Mononitrate, Vitamin A Supplement, Biotin, Potassium Iodide, Calcium Pantothenate, Riboflavin, Pyridoxine Hydrochloride (Vitamin B6), Vitamin B12 Supplement, Manganous Oxide, Sodium Selenite, Vitamin D Supplement, Folic Acid.

Caloric Content

3,742 kcal/kg, 350 kcal/cup

Guaranteed Analysis
Crude Protein 30.0% min
Crude Fat 15.0% min
Crude Fiber 3.0% max
Moisture 10.0% max
Calcium 0.8% min
Phosphorus 0.65% min
Selenium 0.3 mg/kg min
Vitamin A 15,000 IU/kg min
Vitamin E 100 IU/kg min
Taurine 0.1% min
Omega-6 Fatty Acids 2.4% min
Omega-3 Fatty Acids 0.4% min

Total Microorganisms* Not Less Than 80,000,000 CFU/lb

Feeding Instructions
Weight Recommended Daily Feeding (cups)
3-5 lbs 1/3 - 1/2
5-10 lbs 1/2 - 2/3
10-15 lbs 2/3 - 1
15-20 lbs 1 - 1 1/4
Transition Instructions

When transitioning your pet to a new food, we recommend a gradual introduction of the new formula over a 7 day period. For pets with sensitivities, extend the transition period to 10 to 14 days. Start by adding a small amount of your pet’s new food to his or her current food. Gradually, increase the new food amount and decrease the current food amount at each feeding until you are feeding only the new food.

About Diamond Naturals Dry Cat Food

Uncompromising Holistic Nutrition

Uncompromising Holistic Nutrition

Diamond Naturals dog food provides high-quality holistic formulas designed to meet every pet's needs. These nutritious recipes are enhanced with proprietary probiotics for good digestion and immune system support, and superfoods are added to supply nutrients that keep animals strong and healthy.

Superfoods That Deliver

They didn't just add a few superfoods here and there in Diamond Naturals. You'll find 10-20% superfoods in all Diamond Naturals dry foods, made up of tasty ingredients like kale, blueberries, chia seeds, pumpkin, quinoa, papaya, carrots, kelp, coconut and spinach.

Balanced Digestive Support

Balanced Digestive Support

Foods with added probiotics allow more nutrients to be absorbed and used by your pet's body, and that leads to better digestion and overall health. Diamond Naturals foods are enhanced with patented Viables probiotics. Prebiotic fiber from chicory root plus soluble and insoluble fibers from pumpkin, coconut and dried kelp give extra digestive support.

Really Delicious Real Proteins

Made with real chicken and fish meal, Diamond Naturals cat foods satisfy carnivorous cravings meal after meal. These nutritious animal proteins have the essential amino acids your kitties need to keep running, playing, pouncing and staying fit. High-quality proteins like these are the building blocks of healthy muscles and strong bones.

Really Delicious Real Proteins
No Corn, Wheat or Soy

No Corn, Wheat or Soy

All of Diamond Naturals' recipes exclude corn, wheat and soy, common fillers that are used in pet foods. If your cat is sensitive to this trio of ingredients, there's no need to worry when feeding Diamond Naturals. Instead you'll find whole grain complex carbs like cracked pearled barley and quinoa for lasting energy.

About Diamond Pet Food

Headquartered in Missouri, family-owned Diamond Pet Food believes that every pet deserves the best food possible, and they've been delivering on that promise since 1970. They use state-of-the-art facilities across the USA to create quality cat and dog food made to the highest nutritional standards. Every formula balances protein, fat and essential nutrients to keep your pets active and healthy and performing their best.

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About Diamond Pet Food
Customer Reviews
72 Reviews 72 Reviews 4.7 out of 5 Stars

97% Recommend

97% of reviewersrecommend this product

4.7 / 5

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  • Diamond maintenace

    By on

    Trying something different for my kitties.. Good quality cat food even for cats with sensative stomachs. I have an older cat you cant feed cat food thats colored such as meow mix or fancy feast. He gets an upset stomach and leaves unpleasant piles of vomit. My younger cats dont seem to have an issue. So was feeding iams but with the amount of kitties i like to make sure they always have plenty of food. So i did some looking, and found this 40lb bag is a great value. Plus all the cats enjoy it..

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  • Our "Kids" love it

    By on

    We have 8 ...all rescues ..6 were ferals that we have patiently tamed. This food satisfies them all. Their fur is sleek (they are all black) and shiny. No problems with digestion anymore. Extremely happy with this product and buying from Chewy makes it so easy to keep the kitty cupboard full.

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  • Great Food

    By on

    I like the low ash and magnesium levels in this food. I feedOnly to my cat's that are Not on a prescription diet for UTI issues. It's cheaper for 20 pounds at T.S.for 17.99 . I have 14 cats all rescues and savings is important to me. The 40 pounds is a great buy but too heavy for me to lift.

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  • Fat and Happy

    By on

    All of our kitties really love this food. The indoor cats (3) Smokey, Snowflake and Saddles are all fat and happy. Very active and healthy. The outdoor kitties (3) come a running from all parts of the property when they hear the kibble land in the bowl. They all love it. We also use Diamond dog food for 1 of our dogs, the 11 month old puppy.

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  • The colony is getting fat

    By on

    My cat colony (Numbers about 12) loves it! I live in the country, and the city slickers love to dump unwanted cats out here. Being an actual human being, I make sure they are safe, have shelter, and get fed. And vetted. Thanks Chewey, you made my life easier and these (formerly) unwanted cats very happy!

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  • Space Cats Love It

    By on

    My aliens snobby picky cats love this food. They've been dining on Diamond for over a year and are all very healthy and active. The newest rescue had four healthy babies. She was found looking pretty bad, but after two weeks on this food is doing very well.

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  • Diamond Maintenance cat food

    By on

    I don’t know what to say except that the Kitty Kats seem to really like this product so there you go, we feed a lot of strays so we needed something afforadable also.

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  • Cat approved

    By on

    Our cat Gomez seems to really enjoy his new food . He's an outside barn/farm cat . Sense we've purchased this food he comes running when it's time to eat.

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  • Our older indoor-outdoor cats love it

    By on

    We have three cats that are over 12 and spend a lot of time outdoors. Two are active and then there's the old mama cat that was a stray and tired of having kittens. We took her in, got her spayed and she finally trusted us enough to begin staying inside at night. I think she must be at least 15 and has been eating Diamond for the 9 years she's lived with us. She looks great, thick short fur, not too fat, just soft and cuddly. One male thinks he's the great white hunter and the other, a female thinks she's a dog. 11 and 13 years old and they look great!

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  • So far so good

    By on Top 500 Contributor

    So far everything has been good. I switched all my cats to this brand. Everyone seems to be doing ok. No upset stomachs; no vomit. No refusals to eat. Even the outside cats that showed up seem to enjoy the food. One that recently showed up refuses to leave my property now. Love the price for the size. Very difficult to find a large size of bags. 15lbs doesnt cut it for me and thats usually the biggest size most brands carry.

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