Hill's Science Diet Adult Large Breed Dry Dog Food, 38.5-lb bag

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  • Item Number
  • Weight
    38.5 pounds
  • Made in
    United States
  • Brand
  • Food Form
    Dry Food
  • Lifestage
  • Breed Size
    Large, Giant

Hill's Science Diet Adult Large Breed dog food provides precisely balanced nutrition tailored for a visible difference in large breed dogs. 

Key Benefits

  • Recommended for large breed adult dogs 1-5 years of age with ideal weight of 55-110 pounds or giant breed adults 1-4 years of age with ideal weight of 110+ pounds
  • Real chicken is the #1 ingredient
  • Natural sources of glucosamine and chondroitin for healthy joints and mobility
  • High-quality protein maintains strong, healthy muscles
  • Omega 6 fatty acids and vitamin E for healthy skin and coat
  • No chicken by-product meal
  • Made in the USA!

See all items by Hill's Science Diet

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Precisely Balanced Nutrition for Adult Dogs

Hill's Science Diet adult dog food provides precisely balanced, easy-to-digest nutrition for a visible difference in adult dogs. These yummy recipes are specially formulated for dogs 1-6 years of age to help improve skin and coat health, maintain strong, lean muscles and support immunity.

Vets' #1 Choice to Feed
Their Own Pets

More than anyone, veterinarians know a healthy dog food when they see one. That's why they give Hill's Science Diet to their own dogs more than any other brand. Hill's works with pet nutritionists to develop recipes with the best dog food standards in mind. These recipes are designed to keep your furry family member healthy and strong so he can enjoy more moments of overwhelming happiness.

The Science Behind Happy

With over 220 veterinarians, Ph.D. nutritionists and food scientists working every day around the world, Hill's is able to create new products and improve existing ones that help your pet live a long, healthy and full life. They pride themselves on wholesome ingredients, precise nutrition and high-quality standards in pet food because they know firsthand that when your dog is healthier, he's happier too.

Natural Recipes Made
in the USA

Hill's is proudly made in the USA with only high-quality protein. Real chicken, lamb or salmon is the first ingredient, along with other natural ingredients sourced from North America, Europe and New Zealand-all free of artificial colors, flavors and preservatives.

Fresh, Whole Food Ingredients

Hill's uses high-quality ingredients to provide the proper balance of essential nutrients for optimal health. Guided by evidence-based research, Hill's formulas are precisely balanced to meet each pet's specific
life-stage, size or special needs.


Excellent insoluble fiber source that supports healthy digestion, and the prebiotic fiber stimulates the growth of the favorable gut bacteria (probiotics).


Rich in Omega-3 fatty acids that improve the shine of the pet's coat and high in fiber that helps move food through the digestive system.


Excellent source of fiber and minerals and a good natural source of beta-carotene, an antioxidant essential for neutralizing free radicals.


Excellent source of vitamin C and unique natural source of tannins (astringents found in plants) that help prevent harmful bacteria from thriving in the urinary tract.


Good source of antioxidants, vitamin A, vitamin C and dietary fiber, which helps with joint problems and promotes overall gastrointestinal health.


Great source of fiber and vitamin C and boosts the immune system, supports skin and heart health and helps the body release toxins.

About Hill's

For more than 70 years, Hill's Pet Nutrition has helped enrich and lengthen the special relationship between people and their pets by putting their passion for balanced pet nutrition into everything they do. With a dedicated team of veterinarians and pet nutritionists involved in the development of all their products, Hill's is able to ensure high-quality pet food to help all pets live a happy and healthy life.

Shop Hill's Pet Nutrition


Chicken, Whole Grain Wheat, Cracked Pearled Barley, Whole Grain Sorghum, Whole Grain Corn, Corn Gluten Meal, Chicken Meal, Pork Fat, Chicken Liver Flavor, Dried Beet Pulp, Soybean Oil, Lactic Acid, Flaxseed, Potassium Chloride, Iodized Salt, Calcium Carbonate, Choline Chloride, Vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Vitamin A Supplement, Calcium Pantothenate, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Riboflavin Supplement, Biotin, Folic Acid, Vitamin D3 Supplement), Minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Oat Fiber, Taurine, Mixed Tocopherols for Freshness, Natural Flavors, Beta-Carotene, Apples, Broccoli, Carrots, Cranberries, Green Peas.

Customer Reviews

Rated 4.8 out of 5 by 177 reviewers.
Rated 5 out of 5 by Quality product I appreciate how much study went into developing this product and that all ingredients are high quality. I don't feel it's any more expensive than other quality brands. The health of my dog is top priority to me and feeding Science Diet will help him stay that way. July 22, 2016
Rated 5 out of 5 by Best pricing & quick delivery!!! I was totally impressed with every thing at Chewy. Will be my dog food source from now on. July 18, 2016
Rated 5 out of 5 by Diabetic dog My 11 year old chocolate lab was diagnosed 6 months ago. I went thru so many different brands of food I can't remember. This is where I stop! It has leveled off her sugars and I can finally relax with her ups and downs under control. Thanks Hills! XO June 27, 2016
Rated 5 out of 5 by We love this product and so does our dog! She "talks" to ask for her Science Diet Dog Food! Our dog Chloe is a 7 year old yellow lab and has been on Science Diet for Large Breeds dog food since we first got her as a new puppy! She can't wait for her bowl of Science Diet, and even "talks" to ask for it! Crumbs are flying as she devours her Science Diet, she has always loved the taste! Her vet recommended it, and this is all that she has been fed for her entire life. Her coat is so beautiful and shiny, and she has always been so healthy... never needing to go to the vet other than wellness and vacination visits! Her check ups are always first rate and she continues to maintain her ideal weight. She is so playful and happy, runs, goes for walks, chases birds, and loves her family with great "puppy-like" exurberance, even at almost 8 years old! The proof of quality of the Science Diet brand is in the health, vitality, and beauty of our beloved Chloe. We have always highly recommended Science Diet brand dog food to all of our friends with new puppies and older dogs alike. May 30, 2012
Rated 5 out of 5 by DRAMATIC difference with this product than an even MORE expensive top notch brand! Just as a lot of other fur parents have said, my dogs stools are now solid! My boy Liko had off and on wet poo, runny poo, and the occasional solid poo. We rescued him from a shelter and had no idea of his background. Shelter found him as a stray. He is about 1 1/2. So not knowing his history, I was obviously concerned about what he had been eating, which was obviously not a lot considering he was very underweight. I opted to buy the best dry food on the market (won't mention brand, not bad food, just wasn't the right diet for Liko). So, I decided to go back to the Science Diet like I had for my other furbaby, Ceasar. Always had such good luck with it, as well as this time around. Liko has solid stools ALL the time, and instead of deficating once every other day, he now goes TWICE a day! Absolutely love this brand. I know it's just "food" but obviously eating right is important for us as well as our furbabies. Likos coat is even shinier, looks healthier, AND he has put on the perfect amount of weight. I appreciate that they put a lot of research into their food, it has truly made a difference for Liko. THANK YOU SCIENCE DIET and chewy for the cheaper price/fast shipping! April 22, 2016
Rated 5 out of 5 by This product changed my dogs for the better! Hills Science Diet dog food changed my dogs skin and coat so much it's unbelievable! They don't itch like crazy anymore and their coats are so soft and shiny it crazy! I finally found a food that both dogs like and neither dog vomits. I had to go back to feeding them on a schedule because they love it so much they just want to eat it all the time. All the other dog foods I could leave food out all the time and they would just pick at it allday long but this they go crazy over. Big change in energy level too! Overall just a great product to feed your dog!! I am completely satisfied! They will be on this the rest of their lives, it's that good of a dog food! May 18, 2016
Rated 5 out of 5 by 3 Year Old Black Lab - Buddy My black lab, Buddy, loves this food. As soon as the food hits the bowl it is gone. His coat is as shiny as ever. No digestive issues. For his size he eats four cups total a day. Buddy is 3 and is still as active as he was as a puppy. June 7, 2016
Rated 5 out of 5 by diet science My dog loves it. It was her first time on diet science adult. She had been on diet science for puppys. She is a black lab/blue tic If I feed it from my hand or toss it in the air so she can catch it she thinks its a treat. June 4, 2016
  • 2016-07-23 T10:59:05.592-05:00
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