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

  • Was:


  • Price:

    $43.45 FREE 1-2 Day Shipping over $49

  • You Save:

    $9.54 (18%)

In stock
38.5-lb bag
  • 5-lb bag
  • 17.5-lb bag
  • 38.5-lb bag
- Quantity +


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

See all items by Hill's Science Diet

  • Item Number
  • Weight
    38.5 pounds
  • 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

Rated 4.8 out of 5 by 118 reviewers.
Rated 5 out of 5 by Healthy Pet My Chihuahua is 9 years old. I think he has done very well with this pet food. He seems to really like it. Its small bits make it easy for him to chew up. Your delivery service was great too... December 30, 2016
Rated 5 out of 5 by Excellent service! The order arrived quicker than expected! Very convenient! Thanks for the great service December 25, 2016
Rated 5 out of 5 by This product is the best I like the convenience of making a phone call and its delivered to the door. No more having to lift heavy bags of dog food. I think the prices are cheaper. And the service is the best! It almost like having a vet on the phone, not only can I buy the products I need but they're willing to answer questions about my pets Thanks Chewy for everything you do for my Shady Grady and Sadie Lady!!! We Love you!!! December 20, 2016
Rated 5 out of 5 by I have fed my dogs this product for years. Same Science Diet food that I have bought for years but your prices are great and the delivery was prompt, clean and so much easier for me. I signed up for auto-delivery ONLY because the delivery date can be adjusted according to my needs. What more could I ask for from Chewy! December 19, 2016
Rated 5 out of 5 by picky dogs love this food My Corgi and Shitzuhuahua love this food. They have driven me nuts in the past, just letting me know they do not like the varieties I have tried. I'll stick with this, and next month, Chewy will have an order from me. December 15, 2016
Rated 4 out of 5 by Convenient I am glad I found you, My dog is happy and I love the convenience and service just keep the price down. Thank You jerry wayne December 12, 2016
Rated 5 out of 5 by Great dog food for my two Pomeranians I love this dog food. And my dogs love it. One of my furr babies os a rescue dog. And they told me he was a picky eater and from day one he has ate this food. December 4, 2016
Rated 5 out of 5 by Only feed my dogs Science Diet I have 3 completely different breeds of dogs and Science Diet is the only one that suits all three. December 4, 2016
Rated 3 out of 5 by Dog did not like flavor. I have a picky eater and he does not like this flavor. I was really surprised when my daughter's dog, not a picky eater, turned her nose up at this flavor too. November 16, 2016
Rated 5 out of 5 by Small bites is what our girls prefer Science Diet Adult Fitness is great quality food. We have been on it for 10 years recommended by our Vet. All of our fur babies love it, especially the small bites blend. Our Saint Bernard will only eat the small bites blend so it's great Science Diet offers it. The girls stomach is never upset and their coats always look great. November 15, 2016
Rated 5 out of 5 by great! most of our herd (4 dogs) are chubby!!! and they love this food! I have to guard the slow ones so the piggies don't eat theirs! Rita November 14, 2016
Rated 5 out of 5 by Pup loves the taste This bag is good for me because I can order it once every 8 weeks without worry. My pup loves the taste(so do the wild raccoons so don't leave it outside). November 2, 2016
Rated 5 out of 5 by Great product. Dogs love it. Have used this product for several years without complaint. Good nutrition, dogs perform well, and they snarf it up! Will continue to purchase this food with confidence. October 30, 2016
Rated 5 out of 5 by The puppies love it! My new dogs love this food, And the vet said it is good for them. October 22, 2016
Rated 5 out of 5 by Amazing choice i made switching to Chewy! This is a great place to buy your pet food. At store X and store Y I was paying much more money. Why not get it here?? One doesn't have to lug the dog food home. Hauling 30 to 50 lbs. of dog food into the house is a chore I am glad to eliminate! The impulse buys, (such as dog toys my Aussie chews into bits) are not purchased unless I have time to think about it. Online I do have time! I love the service. Three cheers for Chewy & it's founders. October 12, 2016
Rated 5 out of 5 by Great Product I have been using this product for over a year now. I was buying it locally but after checking on line I found it much cheaper pound for pound and delivered to my door rather than driving to pick it up! Chewy also carries it in a larger size bag so I restock less often! Very satisfied! October 8, 2016
Rated 5 out of 5 by Great deal My dog loves this food also gives em a shiny coat on your dog October 17, 2016
Rated 5 out of 5 by We have been feeding this to golden retrievers for years and all have reached their teenage years. We started to feed this to a golden named Max who just missed his 17th birthday. Since then we have rescued 3 goldens and the first 2 reached their teen years and the third is only 6. All of these dogs have had long and healthy lives and Hills Science has always been the central part of their diets. October 8, 2016
Rated 5 out of 5 by Great Price. Great price and fast delivery. All my 5 dogs love the Science Diet and look forward to their next meal. A very healthy and vet recommended dog food. October 11, 2016
Rated 4 out of 5 by Itchy dogs I've used this product for over a year. I ordered it threw chewy and 2 of my 4 dogs have been itching like crazy. Not sure if it's related but I've heard the same product may come with slightly different ingredients from place to place October 7, 2016
Rated 5 out of 5 by Great adult dog food I switched my energetic Boston Terrier from her puppy food to this recently. It was an easy transition and keeps her well fed in-between walks and long days at doggie daycare. I highly recommend Hills Science Diet for lifelong feeding- I also use the canned food to make frozen kongs that she loves. September 23, 2016
Rated 5 out of 5 by Great price/fast shipping My dogs have been on this food for 7 years now and do really well on it. Great ingredients. Chewy provides it at a great price and super fast shipping. September 30, 2016
Rated 5 out of 5 by Why didn't I do this before? First time ordering online. It was so simple, order arrived on time with exactly what I ordered. No going to the store, standing in line, and lugging it home. Love it! October 1, 2016
Rated 5 out of 5 by Great Small Bite Food My dog ate Science Diet at the Shelter. They had her on Large Breed Puppy food when we adopted her, but she seemed to have a hard time eating it. I bought this food, since it was determined that she was no longer a puppy - this bag comes in 38.5 lbs which is a very large bag for a small dog. I placed the food in a sealed plastic container to avoid spoilage. My dog no longer has any issues eating. Great product! September 15, 2016
Rated 5 out of 5 by she's eaten science diet for 8 years now. darcy I have fed my dog Science Diet since I brought her home from the breeders. She is now eight years old and has thrived on it. September 24, 2016
Rated 5 out of 5 by Great product I have 3 Chihuahuas. One 13 years and two twin 16 month old puppies. Been using Hills for a long time. Here's my gripe, the 17 1/2 # bag is hard to open and does not have a zip closer like the adult age defying 15 # has. Why is that? Either this was an old bag, which I doubt, or just poor design by Hills. They need to know. For some reason I can't rotate the picture. September 9, 2016
Rated 5 out of 5 by Our dogs love this product Both of my beagles really like this food and have never tired of it. Hills Science Diet products are recommended by every vet that we have encountered so I don't think rhat you can go wrong with this brand. Enjoy it doggies! September 14, 2016
Rated 5 out of 5 by perfect diet for my dog This food is very nutritious and gives my dog lots of energy for her days full of play September 18, 2016
Rated 5 out of 5 by Best on the market I recently switched my pup to science diet after he had some digestion issues and refused to eat. My family and vet swear by hills. Not only did he start eating again but he was feeling better and looking better. I now swear by hills and will continue to buy their products. September 7, 2016
Rated 5 out of 5 by Love the ease of shopping on line for this great product. Love the larger size. I have 2 Chi mixes and these are the perfect size. September 10, 2016
  • 2017-01-17 T06:21:48.402-06:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-2, bvpage2n
  • co_hasreviews, tv_118, tr_118
  • loc_en_US, sid_46233, prod, sort_default
<<prev2 3 4 5 next>>