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 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


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

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 - 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

144 reviews 144 Reviews 4.9 out of 5 Stars

98% Recommend

98% of reviewersrecommend this product

4.9 / 5
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  • Great dog food.

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    I ordered this because I have 2 older dogs. A Westie 12 yrs old and a German Wire Hair Pointer 10 yrs old. My Westie started getting skin problems and my Wire Hair didn't seem interested in his food anymore. He wanted the food the Westie had. So they are both on it. Their stools are darker and more solid. They are excited to eat it. You can see the veggies in it. Limited ingredient has to be good. They seem happy. So far no more skin problems and shinier coats. Seems to fill them up longer and they don't beg as much for food. It's only been a month but I think I found my new dog food for a long time.

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  • My dogs love this food!

    By on

    Started making my own dog food with many of the ingredients in this brand due to one of our pups having a thyroid tumor that was removed. He was diagnosed with thyroid cancer. Did a lot of research and found that this had more ingredients and supplements than I was making at home. It saved me from having to make it every day for our four pups. So glad I came upon a good wholesome brand of dog food.

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  • Great and organic dog food!

    By on

    I've been using this brand of dog food for over twelve years and my dogs love it. I feel happy giving them this food cause I know it's healthy for them, and made in the USA as well! It's also wonderful buying it from Chewy.com because the customer service and price are great.

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  • It Was Just Ok

    By on

    My dogs ate this food but they weren't all that excited about it. I also found that i needed to feed more of this food than their previous brand to achieve the recommended feeding requirements. This lead to more poop in the yard...not my favorite.

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  • Finicky Dog

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    I have a whippet who is very selective about what goes into his mouth and sometimes he doesn't finish his kibble if he's not thrilled with it. I bought him the salmon flavored kibble and he's been finishing his bowl every day, twice a day.

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  • Best food for my furbaby

    By on

    For the last 3 yrs my baby has been eating this. He is allergic to grains and poultry so this is a good mix for him. We especially like the carrots, bananas, peas that we can see and especially are glad that it is made in the USA.

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  • Great dog food at a good price

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    First dog food I have found that has salmon as the first or main ingredient. Rated a 5 (out of 5) on Dog Food Advisor. Quality ingredients at a reasonable price for any type of grain free - excellent price for salmon.

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  • My dog loves it

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    My dog really loves this food, I think the ingredients are wholesome and she seems to feel great and full of energy, highly recommend!

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  • Great dog food

    By on

    I picked this brand because it has never had a recall. My Weimaraner Joy loves it. I may try some of the other flavors too.

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  • Works for the Mals with digestion sensitivities...

    By on

    This is working well for my Mal who has had some digestion sensitivities; good value for the money. Grain and poultry free was hard to find...

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