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Bil-Jac Large Breed Adult Dry Dog Food Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food

Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food scores higher on KibbleLab, 9.2 to 8.2. Compare ingredients, guaranteed analysis, and AAFCO nutritional adequacy, side by side.

Bil-Jac Large Breed Adult Dry Dog Food and Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food compared

Nutrients:
As Fed
Bil-Jac Large Breed Adult Dry Dog Food
Bil-Jac Large Breed Adult Dry Dog Food

Verified Jul 18, 2026

Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food
Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food

Verified Jul 22, 2026

KibbleLab score The KibbleLab expert rating, 0 to 10, based on published veterinary science.
8.2 / 10 9.2 / 10
Guaranteed analysis (as fed)
Protein Guaranteed analysis gives label minimums and maximums, not measured values, shown as fed.
23.00% Not listed
Fat 16.00% Not listed
Fiber 4.00% 6.40%
Calcium Not listed 0.86%
Phosphorus Not listed 0.61%
Omega-3 0.25% 1.23%
Omega-6 2.50% 3.32%
Moisture Higher moisture means a wetter food; it dilutes the other percentages above.
10.00% Not listed
Calories 4011 kcal/kg 3504 kcal/kg
Calorie density High Moderate
Ingredients
Full ingredient list Every ingredient on each label, in order of weight.
Chicken, Chicken By-Products (organs only, source of arginine), Corn Meal, Dried Beet Pulp, Chicken By-Product Meal, Oatmeal, Brewers Dried Yeast, Flaxseed, Choline Chloride, DL-Methionine, Sodium Propionate (a preservative), L-Lysine, Monocalcium Phosphate, Vitamin E Supplement, Calcium Carbonate, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Zinc Proteinate, Zinc Oxide, Copper Proteinate, Dried Lactobacillus acidophilus Fermentation Product, Dried Lactobacillus casei Fermentation Product, Dried Bifidobacterium animalis Fermentation Product, Vitamin A Acetate, Copper Sulfate, Inositol, Niacin Supplement, Biotin, Sodium Selenite, D-Calcium Pantothenate, Manganese Proteinate, Riboflavin Supplement, Thiamine Mononitrate, Vitamin B12 Supplement, Pyridoxine Hydrochloride (Vitamin B6), Manganous Oxide, Cobalt Carbonate, Mixed Tocopherols and BHA (preservatives), Vitamin D3 Supplement, Potassium Iodide, Folic Acid, Rosemary Extract, Green Tea Extract, Spearmint Extract. Show full list
Corn Starch, Hydrolyzed Chicken Liver, Hydrolyzed Chicken, Ground Pecan Shells, Powdered Cellulose, Flaxseed, Dried Beet Pulp, Hydrolyzed Chicken Flavor, Soybean Oil, Dried Citrus Pulp, Dicalcium Phosphate, Lactic Acid, Coconut Oil, Fish Oil, Calcium Carbonate, Pressed Cranberries, Glyceryl Monostearate, DL-Methionine, Potassium Chloride, Iodized Salt, vitamins (Vitamin E Supplement, L-Ascorbyl-2-Polyphosphate (source of Vitamin C), Niacin Supplement, Thiamine Mononitrate, Calcium Pantothenate, Vitamin A Supplement, Riboflavin Supplement, Biotin, Pyridoxine Hydrochloride, Vitamin B12 Supplement, Folic Acid, Vitamin D3 Supplement), L-Tryptophan, Choline Chloride, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganous Oxide, Calcium Iodate, Sodium Selenite), Magnesium Oxide, Mixed Tocopherols for freshness, Natural Flavors, Beta-Carotene. Show full list
Limited ingredient No No
Health focus Joint care, Probiotic support, Digestive health, Immune support, Skin coat health Digestive health, Skin coat health, Allergy support, Urinary care, Probiotic support
Format & suitability
Food type Dry Dry
Texture Kibble Kibble
Processing Slow Cooked Not listed
Life stage Adult Adult
Breed size Large All Breed Sizes
AAFCO nutritional adequacy
Complete & balanced Whether the manufacturer's label claims the food meets AAFCO nutrient profiles for a life stage. Not an independent test.
Yes Yes
Life stages Adult Maintenance Adult Maintenance
Substantiation How adequacy was established. Feeding trials are the higher bar; formulation means the recipe is calculated to meet the profile.
Formulation Feeding Trials
Maker standards
WSAVA guidelines The World Small Animal Veterinary Association publishes criteria for evaluating a manufacturer: qualified nutritionists on staff, feeding trials, and published research. It does not certify or endorse brands.
No Yes
PSC accredited The Pet Sustainability Coalition is a nonprofit that accredits pet companies on their environmental and social impact through third-party verification. It reflects sustainability practices, not food quality.
No Yes
Recalls & where to buy
Recalls on record KibbleLab began logging recalls in July 2026, so earlier recalls may not appear.
None None
Where to buy
Amazon Chewy
Amazon

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Shared ingredients

Both foods list these among their top ingredients, by label weight.

  • Beet Pulp
  • Flaxseed

Not sure which is right for your pet?

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Common Questions

Which food scores higher on KibbleLab?

Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food scores higher, 9.2 to 8.2 out of 10. Scores reflect published veterinary science.

Do these two foods share ingredients?

Yes. They share these top ingredients: Beet Pulp, Flaxseed.

Are both foods AAFCO complete and balanced?

Yes, both foods are labeled AAFCO complete and balanced.

See the full profiles: Bil-Jac Large Breed Adult Dry Dog Food and Hill's Prescription Diet Z/D Small Bites Hydrolyzed Chicken Flavor Dry Dog Food .

KibbleLab provides informational content only. This is not veterinary advice. Always consult a qualified veterinarian before changing your pet's diet.

This is a neutral, factual comparison, not a ranking or an endorsement of either product. A food's guaranteed analysis gives legal minimums and maximums for a few nutrients, not measured values. No one can pay for placement or a higher score.

Product details are compiled from public sources and may not reflect the latest formulation. Represent one of these brands? Request a correction. Anyone else can email us.