Hill's Science Diet Adult Advanced Fitness Small Bites Dry Dog Food

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38.5-lb bag
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Hill's Science Diet Adult Advanced Fitness Small Bites dog food provides precisely balanced nutrition for a visible difference in dogs who prefer a smaller kibble. 

Key Benefits

  • Exclusive blend of omega-6 fatty acids, vitamin E and other nutrients nourishes the skin and promotes a noticeably shiny coat in 30 days
  • Clinically proven antioxidant blend with vitamins C and vitamins E to help support a healthy immune system
  • Natural, high quality, easy-to-digest ingredients with no artificial colors, flavors or preservatives for a flavorful, nutritious meal
  • Highly digestible, high quality protein to help maintain lean muscle and high quality fiber, fatty acids and antioxidants to support healthy digestion, skin and coat and a strong immune system
  • Recommended for adult dogs 1-6 years of age

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  • Item Number
  • Brand
  • Breed Size
    Extra Small, Small
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States

Nutritional Info


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

Caloric Content

  1. 363 kcal/cup
Guaranteed Analysis
Crude Protein 21.0% min
Crude Fat 12.5% min
Crude Fiber 3.0% max
Vitamin C 85 mg/kg min
Vitamin E 400 IU/kg min
Omega 6 Fatty Acids 2.5% min

Feeding Instructions

Adjust feeding amounts as necessary to maintain optimal weight. If you are unsure, ask your veterinarian. New to this food? Mix increasing amounts of your pets new food with decreasing amounts of the old food over a 7-day period. Keep fresh water available at all times! Your pets nutritional needs may change as they age. Ask your vet at every checkup. Science Diet is available in a wide variety of dry foods, wet foods and treats for your pets unique needs.

Transition Instructions

A gradual transition to a new pet food is important to avoid digestive upset. To transition, mix your pet’s current food with the new food. Over 7 days, gradually decrease the amount of the current pet food while increasing the amount of new pet food.

Pet Lovers Also Bought

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.

Precisely Balanced Nutrition for Adult Dogs
Vets' #1 Choice

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 cat is healthier, she's happier too.

The Science Behind Happy
Natural Recipes Made in the USA

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 B vitamins and vitamin C and contains the most carotene of any vegetable as well as high levels of antioxidants that provide protection against 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 Pet Nutrition

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

About Hill's Pet Nutrition

Customer Reviews

135 reviews 135 Reviews 4.8 out of 5 Stars
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96% Recommend

96% of reviewersrecommend this product

4.8 / 5
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  • love the home delivery

    By on

    In my area, there is only one location to buy the food my dogs eat. sometimes it is difficult to get there during there hours. This solves the problem. it is shipped directly to my home. I am set up on a regular shipments and may have to adjust as to how fast I use the food, but I would recommend this to all pet owners.

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  • love this site!

    By on

    I am very pleased with the selection of merchandise you carry as well as the prices on food! Most importantly you had it at my door step with 2 days! I will definitely keep ordering!

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  • This product is just the right size for our small dog & the quality is very good.

    By on

    I am so impressed with your website. I will be getting all my dogs needs from chewy.com. I read an article about a woman who placed an order & her dog passed away right after she received the order. Your company was so considerate & kind to her. I have never heard of such a great gesture toward a customer and was so impressed. You have gained a loyal customer.

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  • My JoJo is allergic to chicken and beef !!M

    By on

    I bought this big bag of dog food and now I will have to through it out and get something that doesn't ha e beef or chicken in it !! I'm sure it's good food!! This is just something I happen to find out from the vet!! Jo jo has a staff infection and I need some special food!! I'll have to look and see what I can find on your website!!

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  • New food

    By on

    My pup turned a year old so I got 1-6yr old food. My first order was the large nuggets which she wasn't crazy about then I ordered the same kind but small bites which she loves.

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  • Coat is softer!

    By on

    I had been giving my Spitz dog a grocery store brand and her coat began to feel very coarse and not soft like is was when I rescued her. After eating this brand about a month that the vet recommended her fur coat is once again very soft.

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  • Great Buy

    By on

    I sent this bag of food to a rescue in NC where I got my third rescued Cocker Spaniel. Donna uses this for the dogs she has rescued looking for a forever home. My Kiki I got from her is wonderful. If you are looking for a dog or cat PLEASE rescue one, they will love you forever.

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  • The Science Diet product is excellent. Our dog likes it and he loads of energy and shiny coat.

    By on

    We loved the service we received in ordering our dog food. It was cheaper and delivered right to our door. Sweet. We use Science Diet small bites. Our hunting dog is a family dog and a working dog. He has loads of energy, a shiny coat, and he likes the food. He is a picky eater so that is a plus.

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  • She loved it!

    By on

    I ordered this for my friend's dog. She is a big dog but likes the small kibble. And she loves to eat and gets treats everywhere she goes because she's so pretty and sweet so she needs the weight management this product offers. He told me she dove into this food with an overwhelming enjoyment. Customer very happy!

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  • Fast Shipping!

    By on

    Received order in under 24 hours! Product was great - easy ordering, and great convenience with autoship.

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