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 (cup)
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 1/2 cup for every 6 oz of wet food.

  • For dogs over 100 lbs: Add 1/4 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

130 reviews 130 Reviews 4.8 out of 5 Stars

96% Recommend

96% of reviewersrecommend this product

4.8 / 5

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  • Excellent food!

    By on

    I’ve struggled with my Aussie for two years now trying to find a food he actually likes. I thought I found a winner once upon a time but it gave him digestive issues and it was back to the drawing board. It’s been a constant drama to get him to eat - until I bought this food. He actually eats like a normal dog now! I don’t have to add anything on top, or mix half the contents of my fridge with it to get him to finish his bowl. He’s on his second bag now and his coat is noticeably softer, and his energy level is through the roof. He’s gotten into peak condition on CP Ultramix. So glad I tried this stuff!

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  • Solved our issues

    By on

    I originally had switched my golden from Blue Buffalo to this because I didn't like how they continued to have recalls. He has always had skin allergies and I thought they weren't resolvable since we tried just about everything in the books, from the Science diet to meds and air filters. As soon as I switched him to this, he has since barely scratched!! I'm so happy he finally can relax and stop scratching 24/7. He also loves the dried fruit and veggies in here which is a plus!

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  • Great dog food

    By on

    Blue loves Castor and Pollux and I love that this food seems to last longer than another All natural brand I used to buy. And chewy sales the kind that my local Petsmart doesn’t have anymore. They only carry the Pristine and Organix now. So thankfully I can still purchase the Ultramix from chewy for a lower price and I typically receive it 1 day after ordering.

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  • Fixed the brown tear stains

    By on

    I adopted a mostly white Lhasa mix dog and the tear staining was becoming worse the longer I had him. I tried the powder to sprinkle on the food and my dog wouldn't eat it. After some research I decided to pursue changes in diet, specifically grain free with duck and sweet potato as that has the least chance of aggravating alergies. The change is remarkable! The old stained hair is still growing out but it will get better with each grooming. I tried other brands, but none resolved as the goopy eyes. This did quickly and my dog LOVES the food. He's happy and I'm ecstatic!

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  • My dogs are gobbling it up

    By on

    I like to feed different foods periodically and I always check Dogfood Advisor before I buy. This food gets the highest rating of 5 stars. It's a small kibble which is great for my 5 small older dogs, and there are bits of dried carrots and bananas for extra fun. I will buy this food again.

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  • MoMo loves it

    By on

    Our puppy, a wonderful gift from GOD, Who chose us to be hersteward, sometimes had odd asked, this is 1 of tthose times; dhe loves to eat this when it is what we would consider STALE, though by just 48~72 hour. We then heat her HAPPILY crunching away, usually wanting more, I would DEFINITELY recommend this good. Your dog will thank you!!

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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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  • 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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  • Great food

    By on

    Love this food. My furry kids coats are beautiful and shiny. They like the taste and the price is right! Great service also!!!

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  • Dog food recommendation

    By on

    Love Castor Pollock brand - dogs love it and no digestive problems. Healthy coats, etc.

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