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Castor & Pollux Natural Ultramix Grain-Free Dog Food Review

Castor & Pollux Natural Ultramix Grain-Free Dog Food Review

Our Recommendation

Wow! This food has a lot of different proteins in it! I immediately noticed that this is a food that has a complex of different flavors that your pooch will love. Duck, turkey, lamb, salmon, and a variety of fruits and vegetables make this food well balanced and nutritionally complete.

  • No artificial colors or flavors.
  • Free of animal by-products.
  • Real meat makes up the first four ingredients.
  • Antioxidant-rich fruits like blueberries provide immune system support.
  • Added probiotics help with digestion and nutrient absorption.
  • Completely grain-free.
  • Suitable for sensitive dogs and those with allergies.
  • Salmon oil adds valuable Omega-3 and 6 fatty acids for a gorgeous coat and great skin.

Castor & Pollux are one of the major producers of natural and organic dog foods. I recommend this formula for any dog parent that wants a quality dog food that offers a complex flavor profile and superior balance of ingredients. There is no question that this is a superior dog food that your dog will eat with relish! We also got our hands on Castor & Pollux Organix Grain-Free Organic Dog Food and would also recommend it for your dogs.


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.

Scout’s Pick

Natural Ultramix Grain Free Duck, Sweet Potatoes and Whole Peas Entrée Dry Dog Food, 25-Pound

Buy from Amazon

Nutritional Analysis

Pet food ingredients, nutritional values, and the way they are labeled for consumers are monitored by several organizations in the United States including the Food and Drug Administration (FDA) and the NGO, Association of American Feed Control Officials (AAFCO).

Each year the AAFCO publishes two sets of nutritional minimum standards for dog food intended to help specify if a food is suitable for:

1. Dogs in the growth & reproduction phases of life
2. Adult dogs maintaining a healthy weight and activity level

Caloric Content

3,740 kcal/kg, 460 kcal/cup

Guaranteed Analysis

Nutritional Component Value Meets AAFCO Growth & Reproduction Standards Meets AAFCO Adult Maintenance Standards
____________________________ ____________________ ____________________ ____________________
CRUDE FAT 17.0% min
CRUDE FIBER 3.5% max
MOISTURE 11.0% max
CALCIUM 1.0% 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    

* – indicates not yet analyzed

Transition Instructions

Gradually replace your dog’s normal dog food with Castor & Pollux over the course of 5-10 days depending on how sensitive your dog is. Most dogs are totally fine with a five-day transition time, but if your dog has been prone to stomach issues in the past you may want to increase the transition period to 7-10 days.

Since Castor & Pollux is a grain-free formula with concentrated nutrition and calories, you may find that you may need to feed your dog a lower volume of dog food. Check the feeding chart below and compare it to the volume of food you were giving your dog when feeding the old brand. This will prevent overfeeding and help you get the most out of a bag.

Feeding Amounts

Depending on your dog’s size and activity level, they may need more or less food in their daily feeding amounts.

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

The Bottom Line

This dog food is great for just about any dog. The combination of quality meats, fruits, and veggies, with added probiotics, vitamins, and minerals, makes a balanced ration that you can feel good about giving your pet. This food would also be a great choice for pet parents that have picky eaters or pooches with sensitive stomachs or allergies. Castor & Pollux have a lot of formulations so there is something for every dog that is a member of your family.

Scout’s Pick

Natural Ultramix Grain Free Duck, Sweet Potatoes and Whole Peas Entrée Dry Dog Food, 25-Pound

Buy from Amazon

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