Diamond Maintenance Formula Adult Dry Cat Food

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40-lb bag
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Diamond Maintenance Formula for Cats is designed to enhance the long term health of adult cats and is formulated with high-quality nutrients, in optimum amounts, including Omega Fatty Acids for a shiny coat and antioxidants for ideal health.

Key Benefits
  • Formulated to help maintain optimum health of your cat and meet the everyday needs of your cat
  • Omega-6 and omega-3 fatty acids help keep the skin and coat healthy and shiny
  • Highly digestible protein sources provide the building blocks needed to support ideal body condition
  • Added antioxidants, along with essential vitamins and minerals, further support overall health and wellness
  • Magnesium controlled and taurine fortified

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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, Brewers Rice, Dried Beet Pulp, Natural Chicken Flavor, Flaxseed, Fish Meal, Sodium Bisulfate, Potassium Chloride, Choline Chloride, Dl-Methionine, Taurine, 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 E 150 IU/kg min
Taurine 0.1% min
Omega-6 Fatty Acids 2.4% min
Omega-3 Fatty Acids 0.4% min
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
61 reviews 61 Reviews 4.8 out of 5 Stars

97% Recommend

97% of reviewersrecommend this product

4.8 / 5

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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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  • cats love this food

    By on

    I feed about 40 plus cats, opossums and raccoons daily and they all really like this cat food. I put out bird seed trying to keep the birds from eating it, but they continue to eat the cat food and then their bird seed. It must taste good to all animals. I feed my indoor cats several different brands of food and this seems to be one of their favorites.

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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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  • 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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  • Large Cat Food Bag

    By on

    I was looking for a large bag of cat food so we wouldnt have to keep purchasing it over and over. This bag is awesome and Lasts a good amount of time. The cats seem to like it.

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  • Great Cat Food

    By on

    I love being able to get a larger bag of cat food delivered so I don't have to lift it into a shopping cart, then into the car, then into the house. Plus, this is a pretty good food to feed the outside cats.

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  • Diamond Cat Food

    By on

    Diamond, what can I say. They make great products for cats and dogs. Been using them for 20 years without any issues.

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  • Seriously Happy!

    By on

    This was SO easy and simple! With 2 dogs and a cat I will be a customer from now on! THANK YOU!

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