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Our Biologically Appropriate diets are based on the nutritional philosophy that dogs and cats need to be nourished according to their evolutionary adaption and thrive on diets containing fresh and diverse meat ingredients.

That’s why our ACANA and ORIJEN diets are packed with high-quality animal protein, a nutritionally balanced fatty acid profile, minimal (and low-glycemic) carbohydrates, and naturally sourced vitamins and minerals that will nourish your cat and dog completely – just as nature intended.

  • Comparison of Captive and Free-Range Wolves

    Brief: This paper compares the serum biochemistries of wild gray wolves eating a natural diet and captive gray wolves eating a traditional “dog food” diet. This study demonstrates that nutrition, activity level and environment have a significant effect on serum biochemical values and should be accounted for when interpreting blood analysis results.

  • Effects of High Protein on Renal Function

    Brief: This review looks at the effects of dietary protein concentration on various mammalian species, with a focus on companion animals and the rat. This review presents numerous studies which validate that protein does not progress renal injury in dogs and rats are not an appropriate model for assessment of kidney function in the dog. The review also demonstrates that restricting protein in senior dogs does not have a protective effect against chronic renal disease.

  • High Protein and Large Breed Puppies

    Brief: This article reviews the growth and development of Great Dane puppies fed various levels of protein. It found that protein intake had no effect on calcium metabolism and improper skeletal development in growing large breed puppies. Improper bone formation was distributed evenly between low and high protein groups suggesting that genetics and mineral composition of the diet has more of an influence on skeletal development in large breed dogs.

  • High Protein and Weight Loss For Cats

    Brief: This study examines the effects of high protein diets on fat loss in cats. It found that obese cats fed a diet high in protein had greater fat loss than cats fed a diet with 30% protein. Cats fed a high protein diet were also able to maintain their lean body mass, which has been shown to lessen the risk of weight rebound.

  • ORIJEN White Paper – Understanding the Carnivore

    Brief: Starting with a review of the eating anatomy of dogs and cats, and their evolutionary adaptation to meat and protein based diets, Champion’s White Paper provides and in-depth explanation of the Biologically Appropriate nutritional philosophy. The White Paper also covers the history of commercial pet foods, and explains how conventional dog and cat foods came to be and why they continue to use commodity ingredients and produce carbohydrate based foods. The document concludes by reviewing the many pet food myths that consumers face in choosing a suitable food for their dogs and cats.

  • Pet Food Safety: Dietary Protein

    Brief: A review of the evidence regarding the safety of dietary protein in dogs. This review concludes that protein does not adversely affect kidney function and that protein restriction in senior animals is unnecessary and can be detrimental to the health of the animal.

  • Protein and Renal Parameters in Cats

    Brief: This study evaluates the effect of dietary protein content on renal parameters in 23 healthy spayed female cats. The objective was to determine if cats eating diets high in protein will have higher serum urea nitrogen (UN) and creatinine values without a detectable change in kidney function, as assessed by urinalysis. A single random cross-over design was used.

  • The Myths of High Protein

    Brief: This review addresses the myths and fallacies surrounding high protein diets and kidney failure in dogs. Results from several experimental studies on dogs that have failed to provide evidence of the benefit of reduced protein intake on renal function are reported.