Petco Text Logo
Petco Pet Logo

Why do vets recommend Science Diet and are grains bad for dogs?

Updated On September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Female | spayed | 5 years and 4 months old | 17 lbs

Is science diet a high quality brand? Why do so many vets reccomend this food? Is wheat corn and soy bad for dogs? Why or why not?

3 Answers

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on November 3rd, 2017

Science Diet is an excellent brand of food! It's recommended by so many vets because they have veterinary nutritionists on staff who help formulate the food to make the dog's nutritional needs are met. A veterinary nutritionist is the person with the most in-depth knowledge about a dog's needs nutritionally, and many other brands of food do not have veterinary nutritionists on staff. In addition, Science Diet owns their own factories, so there is strict quality control as to what goes into their food. This is in sharp contrast to other brands, such as Blue Buffalo, who do not own their own factories and simply hand a recipe over to make their food. That's why Blue Buffalo has gotten into trouble a number of times for their lack of quality control. Finally, wheat corn and soy isn't bad for dogs. They provide a source of energy for dogs, and should be part of their diet unless there is a proven grain allergy. Grain allergies in dogs are actually extremely rare. Only 10% of all dog allergies are food related, and the majority of those food allergies are due to protein not grains. Grain free food is a current fad that has no scientific basis as to its efficacy. I hope this helps!

Vote icon

10Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Image profile

    Answered By C. Rathjens, DVM

    Veterinarian

    Published on October 10th, 2018

    Those brands (and I'd throw Hills in to round out my personal list) are recommended by vets because they do good quality control and have veterinary nutritionists on staff to make sure they are producing a nutritionally complete diet. Generally, foods are the grocery store are lower quality than pet stores, although many pet stores are now pushing fad diets (ie grain free, raw, etc) and tiny producers that veterinarians don't support (in regards to the fads) or can't comment on their quality (in regards to tiny producers - doesn't mean they aren't good, we just don't know yet). I will comment that Blue Buffalo is a diet I see many issues with in pets, mostly with skin issues and diarrhea. I hope that helps answer you question!

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on April 13th, 2018

    We recommend Hill's because it's an excellent food. There are veterinary nutritionists on staff at Hill's to ensure that each kind of food is specifically formulated to meet a dog or cat's nutritional needs, or to meet the medical needs in terms to medical problems such as kidney disease. They have excellent quality control over their food because they own their own factories, unlike companies such as Blue Buffalo who do not own their own factories, give their recipes to someone else to make, and have publicly admitted to having poor quality control over their food being made. In addition, their recipes are based on scientific evidence, unlike companies who make grain free foods where there is no scientific evidence it's beneficial, and in fact studies are now coming out showing that grain free diets with lentils are actually detrimental to a dog's health long term (leading to taurine deficiency and subsequent heart disease from the taurine deficiency). It's a common misconception that vet's have no training in nutrition, which is often stated by people who have never attended veterinary school. We do have lots of veterinary nutritional training throughout our schooling, and take continuing education classes on nutrition when practicing vets to keep up to date with current research and recommendations. I hope this answers your question.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored