Castor & Pollux Natural Ultramix Salmon Grain-Free & Poultry-Free Adult Dry Dog Food

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25-lb bag
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This recipe is ideal for active adult dogs (all breeds, all sizes) through their golden years. This grain-free & poultry-free recipe uses salmon as the primary ingredient, followed by other fish-based protein sources for optimal nutrition and great taste. Real pieces of minimally processed fruits and vegetables provide a natural source of antioxidants, vitamins, and fiber that you can actually see in the bag. And there are plenty of other powerful benefits that aren’t visible to the eye, including Omega 3 and 6 Fatty Acids that contribute to healthy skin and a luxurious coat, and a balanced calcium to phosphorous ratio that helps promote healthy bones and teeth. Natural Ultramix Grain-Free & Poultry-Free Adult Dog Food is made without artificial colors and preservatives, grains, or poultry.

Key Benefits

  • Natural salmon is the #1 ingredient, and then bolstered with other fish based protein sources
  • Provides a highly digestible, balanced diet great for dogs with sensitivities to poultry or grains
  • Omega 3 and 6 fatty acids contribute to healthy skin and luxurious coat, and calcium and phosphorus ratio helps support healthy bones and teeth
  • Include minimally processed fruits and vegetables that provide a source of antioxidants and vitamins
  • Made without corn, wheat, soy, artificial colors or preservatives with probiotics to support digestion

See all items by Castor & Pollux

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

Nutritional Info


  1. Salmon, Salmon Meal, Herring Meal, Menhaden Fish Meal, Dried Peas, Dried Potato, Tapioca Starch, Canola Oil (Preserved with Mixed Tocopherols and Citric Acid), Pea Protein Concentrate, Tomato Pomace, Dried Bananas, Natural Salmon Flavor, Ground Whole Flaxseed, Brewers Dried Yeast, Dried Carrots, Monocalcium Phosphate, Salt, Freeze Dried Peas, Potassium Chloride, Dicalcium Phosphate, Dried Cranberries, Dried Sweet Potatoes, Fructooligosaccharide, Vitamins (Vitamin E Supplement, L-Ascorbyl-2 Polyphosphate, Vitamin A Supplement, Calcium Pantothenate, Niacin, Riboflavin, Vitamin B12 Supplement, Biotin, Thiamine Mononitrate, Pyridoxine Hydrochloride, Folic Acid, Vitamin D3 Supplement), Minerals (Zinc Proteinate, Iron Proteinate, Copper Proteinate, Manganese Proteinate, Calcium Iodate, Sodium Selenite), Choline Chloride, Rosemary Extract.

Caloric Content

  1. 3,524 kcal/kg, 375.2 kcal/cup
Guaranteed Analysis
Crude Protein 30.0% min
Crude Fat 15.0% min
Crude Fiber 4.5% max
Moisture 10.0% max
Calcium 1.2% min
Phosphorus 1.0% min
Vitamin E 75 IU/kg min
Omega 6 Fatty Acid 2.25% min
Omega 3 Fatty Acid 1.75% min

Feeding Instructions

Weight Daily Feeding (Cups)
3-12 lbs 1/2 - 1 cup
13-25 lbs 1 1/4 - 1 3/4 cups
26-50 lbs 2 - 3 cups
51-100 lbs 3 - 4 1/2 cups
100-150 lbs 4 1/2 - 6 cups
  • Add ½ cup for every 25 lbs of body weight over 150 lbs.

This formula is not intended as the sole diet for growing puppies, pregnant or lactating dogs – these dogs have special nutritional needs that require a different balance of protein, calories, and other nutrients. Help your dog maintain good body condition by monitoring food intake, providing exercise and visiting your veterinarian on a regular basis. Please adjust your dog’s feeding amount using the chart as a guide. The amount will vary by age, activity level, environment and breed. Always have a clean bowl of fresh water available for your dog.

Transition Instructions

To help your dog adjust to a new diet, we recommend a gradual change. Slowly introduce Natural Ultramix by mixing it in with the current food over the course of 7 to 10 days, gradually increasing the amount of Natural Ultramix while decreasing the amount of your dog’s current diet.

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Customer Reviews

Rated 4.9 out of 5 by 113 reviewers.
Rated 5 out of 5 by American Bulldog Review Hi, Brogue here - I am a 1 year American Bulldog and I absolutely love this food! My allergies to food or so what I thought was from food, started when I was a pup. My tummy would break out in red itchy patches and hives. My mom couldn't figure out what was wrong. The vet said it was most likely because I was running and playing in the grass and had what she called "environmental" allergies. When I went potty, it wasn't good on top of it! I ate the "vet" food and it was OK, but I really didn't love it. After trying many different kibble, my mom found this one after lots of hours spent researching on the computer. Salmon is my favorite cause my skin does much better with it. So, mom bought me this food. I have been so happy and energetic! My skin is not so itchy and I have't had a rash in a long time! My parents are really happy too! They tell me how good I am when I finish an entire bowl of it. You should try this food for your dog! October 26, 2016
Rated 5 out of 5 by Yay real food!!!! My dogs think this food is awesome and so do I :) my boxers are prone to gas and after successfully switching we have no gas!!!!! Which is a miracle!!!! I love the real pieces of dried fruits and veggies in it. The kibble is heart shaped so i think that is cute too. Bella thinks the pieces of dried food are treats and loves them. I rotate kibble brands/flavors and im so glad to stumble onto this food. My girl cant have grains or poultry so this is perfect. I know other reviews said its really fishy smelling but i dont notice that. My husband is really senstive to the fish smell of dog foods and he hasnt even noticed we did a food change to fish yet :) and he can always tell!!! Id love to also try the duck flavor. Im a little nervous since one of my dogs cant do chicken i wonder if duck would affect them... either way im really glad to have found this food. I think we will stick with this one for a while!!! Chewy rocks as always. Love the added visuals with the videos for all the dog foods!!!! Go chewy!!! Your awesome. October 7, 2016
Rated 5 out of 5 by Great food for allergies I have a shephard and a terror that have fought with allergies pretty much all their lives. It's always drive. Me crazy trying to figure out what food product to buy. I even tried a local made product that I really thought was working but one day they both stopped eating it. So I had to find something and our local pet store recommended this product. I mentioned the allergies so she said to try the fish product. So far so good. I spray coconut oil over their food for extra help for their coat and it's good for them. So far so good it's been about 3 weeks on it. Kc my older shephard actually has more energy again oh and no more chewing on their feet love it October 22, 2016
Rated 5 out of 5 by Poultry free This is the best food we have ever found for our dogs. October 25, 2016
Rated 5 out of 5 by Good solution for dog with poultry allergy I have a Siberian Husky with a severe reaction to poultry. This food solved the problem 100%. The food is highly palatable and has presented no dietary problems. My only issue is the 30% protein, I would like to see C&P produce a poultry free product with protein at a 25% or 26% level for senior dogs. September 15, 2016
Rated 5 out of 5 by Highly Recommended Pet Food I sought out a grain-free, poultry-free food after struggling to find some allergy-relief for my dog, Fred. He is 10 years old and, with a recent move to Texas, was overwhelmed by allergies. Our vet had tried multiple medications, etc. with no affect. A friend recommended we switch his food so I took a chance and order this Castor & Pollux bag. It has made a huge difference for my dog! He seems the happiest and most energized he has been in a long time. His allergy-related symptoms are minimal at most. Clearly, this diet switch was essential for his health. Though it might not work for all, I highly recommend this food. It not only helps Fred health-wise, but he loves eating it. There are some very small vegetable chunks in the food which he sometimes does not digest but that does not concern me. From one pet owner to the other, I'll say it again, I highly recommend this dog food. June 13, 2016
Rated 5 out of 5 by A great, healthy option for your furbabies!! I love that this is grain free and poultry free! It is a little fishy smelling, so I would recommend keeping it in a sealed container. My furbabies go crazy for this food! I feel so much better giving them food that's good for them. It's not a "filler" dog food. You can see the salmon and dried bananas! September 11, 2016
Rated 2 out of 5 by My lab-chow mix who has grain/poultry allergies HATED this food After researching the market out there for a new grain-free, poultry-free dog food for my 90 pound, 8-year old lab-chow mix, I was excited to find Castor & Pollux Natural Ultra-mix Salmon on Chewy.com. Prior to starting him on a grain/poultry free track, my dog was seen by the vet for allergies (symptoms include excessive biting/licking his back toes which have become red, excessive shedding, lethargy, decrease in appetite). I slowly introduced the new food to my dog, and, initially, I thought he was liking it at first, but then he started AVOIDING his food bowl. It became SUCH a tiresome battle trying to get him to eat his food. What's worse is that I would see pieces of the food go right through him (evident in his soft stool). I decided to try this food for at least 60 days before making a decision to search for a new grain-free, poultry-free food. Have been reading great things about Wellness Core Ocean formula so will be trying that out next. Wish us luck!! April 23, 2015
  • 2016-10-31 T06:34:23.574-05:00
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