Castor & Pollux Natural Ultramix Grain-Free Duck, Sweet Potatoes & Peas Entree Adult Dry Dog Food

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25-lb bag
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  • 25-lb bag
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Now you can provide some much needed variety in your dog’s diet without sacrificing healthy nutrition. Natural Ultramix Grain-Free Duck, Sweet Potatoes & Whole Peas Entree Dry Dog Food features all-natural duck protein, plus wholesome sweet potatoes and whole peas with essential nutrients. It’s even grain-free - ideal for dogs sensitive to grains.

Key Benefits

  • First ingredient is natural deboned duck, with real pieces of fruits and vegetables to help maintain a healthy digestive system
  • Contains probiotics to help support digestion and rich in antioxidants and essential fatty acids
  • Great for dogs sensitive to grains, while still craving the taste and getting the nutrients your dog needs
  • Tested throughout the production process to ensure quality and safety with no artificial colors, flavors or preservatives
  • Calcium and Phosphorus ratio helps support healthy bones and teeth

See all items by Castor & Pollux

  • Item Number
  • Weight
    25.0 pounds
  • Brand
    Natural Ultramix
  • Breed Size
    All Breeds, Small Breeds, Medium Breeds, Large Breeds
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Sensitive Digestion, Grain-Free, No Corn No Wheat No Soy

Nutritional Info


Duck, Turkey Meal, Chicken, Lamb Meal, Salmon Meal, Sweet Potatoes, Potatoes, Natural Favor, Peas, Potato Protein, Pea Protein, Bananas, Carrots, Apples, Cranberries, Blueberries, Organic Alfalfa, Salmon Oil, Salt, Minerals (Zinc Amino Acid Complex, Zinc Sulfate, Iron Amino Acid Complex, Manganese Amino Acid Complex, Copper Amino Acid Complex, Potassium Iodide, Cobalt Amino Acid Complex, Sodium Selenite), Choline Chloride, Vitamins (Vitamin E Supplement, Vitamin A Supplement, Vitamin B12 Supplement, D-Calcium Pantothenate, Vitamin D3 Supplement, Niacin, Riboflavin Supplement, Biotin, Pyridoxine Hydrochloride, Folic Acid, Thiamine Mononitrate), Chicken Fat (Preserved With Mixed Tocopherols), Dried Chicory Root, Yucca Schidigera Extract, Dried Lactobacillus Plantarum Fermentation Product, Dried Lactobacillus Casei Fermentation Product, Dried Enterococcus Faecium Fermentation Product, Dried Lactobacillus Acidophilus Fermentation Product, Gelatin, Rosemary Extract.

Caloric Content

3,740 kcal/kg, 460 kcal/cup

Guaranteed Analysis
Crude Protein 38.0% min
Crude Fat 17.0% min
Crude Fiber 3.5% max
Moisture 11.0% max
Calcium 1.0% min
Phosphorus 0.8% min
Vitamin E 50 IU/kg min
Glucosamine 1,200 mg/kg min
Chondroitin SulFate 1,200 mg/kg min
Omega 6 Fatty Acid 4.5% min
Omega 3 Fatty Acid 0.4% min

Feeding Instructions

Weight Daily Feeding (Cups)
3 lbs 1/3
6 lbs 1/2
10 lbs 3/4
15 lbs 1
20 lbs 1 1/3
30 lbs 1 3/4
40 lbs 2
50 lbs 2 1/2
60 lbs 3
70 lbs 3 1/2
80 lbs 3 3/4
90 lbs 4
100 lbs 4 1/4

Every dog is a little different, so optimal feeding amounts may vary with age, size, and activity level. Please use the information adjust when needed. If feeding with wet food, reduce dry amount by ½ cup for every 6 oz of wet food.

  • For dogs over 100 lbs: Add ¼ cup per additional 10 lbs.

Transition Instructions

Gradually mix in the new food over a 5 - 7 day period, increasing the amount of Natural Ultramix each day.

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Customer Reviews

117 reviews 117 Reviews 4.8 out of 5 Stars

97% Recommend

97% of reviewersrecommend this product

4.8 / 5
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  • Great dog food!

    By on

    We switched to this dog food because Fromm was no longer available through chewys. We had been fighting a yeast infection on our swissys skin for a very long time and tried everything. Since we switched to this food her skin has almost completely cleared and her tummy and stools are great!!! Chewys not carrying Fromm actually ended up a blessing for us!! She also loves this food, she eats it as fast as I put it in her bowl!! Love it!!

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  • Dogs love it

    By on

    I have 2 huskies and they love it! Ren used to have bad skin and I always thought it was due to outdoor allergies. Ever since we switched to this food his skin has been clear! Maya used to leave Brown spots on our lawn, but since switching to this brand she no longer does that! Happy dogs happy mom!

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  • Healthy and flavorful!

    By on

    I have two labs, they'll eat anything but one of them has some type of allergy so I keep the ingredients down and omit grains. This food fits the bill, made in America, and good value here at Chewy. Like I said...they'll eat anything but I have to admit they seems to really like this stuff.

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  • Their Favorite!

    By on

    All four of my dogs love this! With other dry food I make a gravy with a little bit of canned food to pour on the kibble to make it more appealing. No need to do that with Ultamix. This is a hit with all of my rescued girls. Plus Ultramix contains the quality ingredients that I look for.

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  • Great service

    By on

    This is so easy I couldn't find the food that my dog has to have due to allergies and found it on Chewy and I didn't have to search all over. Great service and I set up auto ship and saved more money.

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  • Great purchase!

    By on

    Great food and fast delivery.... very happy ! Food looks better than any previously purchased. Won't hesitate to use again.

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  • Pawsome food

    By on

    This is a great food has all the nutrients my dog needs and she actually loves eating it, a rare combination with dog food.

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  • wagging tail, 5 stars!

    By on

    My dog is a cattle dog/? red coated 47lb athletic female. She has had fur patches falling out (on a medicine now) and walking sadly away from bowls of Blue Buffalo, Taste of the Wild and Natural Balance of every kind, eating only when very hungry. She liked PureVita but the cost is too much and was lukewarm on Avoderm, but would eat it. But this dog food was tail wagging good and "eat it now" delicious! It looks like real food and should be good for her skin allergies. Hoping this is the last of the Quest!!!

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  • Nice dry food

    By on

    I can't speak personally to how this tastes, but my 3 pups seem to dig it! Ingredients look good, too.

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  • My Girls Went Nuts

    By on

    My girls went crazy over this food! They were trying to eat it as I was pouring it from the bag into the air-tight container. It was wonderful to see them so excited over their food for once! The excitement hasn't worn off, either; mealtime is very anticipated these days.

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