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Hill's Science Diet Senior 11+

Manufacturer: Hill's Science Diet

Hill's Science Diet Hill's Science Diet Senior 11+ Chicken
67.5Technical Score

The Hill's Science Diet Senior 11+ (Hill's Science Diet) earned a technical score of 67.5/100 (rated ✅ Solid) under the independent My Pet Magazine methodology, which combines the IDNM nutrient density index (31 pts) and the IPFI ingredient purity index (100 pts). On a dry-matter basis, this food for cats delivers 30.43% protein and 19.57% fat. The analysis is computed by algorithm, with no payment or interference from brands.

Is Hill's Science Diet Senior 11+ good?

So-so. Hill's Science Diet Senior 11+ is in the "Solid" band (technical score 67.5/100), below our High Standard band. Compare it with the alternatives on this page. The score combines nutritional density (IDNM 31) and ingredient purity (IPFI 100), with 30.43% protein and 19.57% fat on a dry-matter basis. At 4044 kcal/kg, FEDIAF maintenance needs work out to 47–63 g per day for an adult cat weighing 4 kg (full table below).

Nutritional Analysis

IDNM (Nutrient Density)31 / 100
IPFI (Ingredient Purity)100 / 100
Final Score67.5

Dry-Matter Composition

Protein30.43%
Fat19.57%

Composition and Energy

Values as declared in the manufacturer guaranteed analysis (as-fed basis — as printed on the bag).

Nutritional composition of Hill's Science Diet Senior 11+ (metabolizable energy when available in the dataset)
NutrientValue
Crude protein28 %
Crude fat18 %
Crude fiber3.5 %
Moisture8 %
Metabolizable energy4044 kcal/kg

How much to feed per day

Estimated daily serving (g/day) based on the metabolizable energy of this food (4044 kcal/kg) and the maintenance energy requirement (MER) of an adult cat per FEDIAF 2024, from the lowest value (low-activity dog; neutered or indoor cat) to the moderate one (moderately active dog; active cat). It is a starting point: adjust to your pet's body condition and your veterinarian's advice. The calculation ignores age, neutering (in dogs) and individual clinical conditions.

Recommended daily serving in grams per day of Hill's Science Diet Senior 11+ by the weight of the cat
Weight of the catEnergy requirementRecommended serving
3 kg157–209 kcal/day39–52 g/day
4 kg190–253 kcal/day47–63 g/day
5 kg220–294 kcal/day55–73 g/day
6 kg249–332 kcal/day62–82 g/day

Formula: maintenance energy (kcal/day) = coefficient × weight(kg)^exponent. Dogs: coefficient 95 (low activity) to 110 (moderate activity), exponent 0.75 (FEDIAF 2024, Table VII-7, p. 55). Cats: coefficient 75 (neutered or indoor) to 100 (active), exponent 0.67 (FEDIAF 2024, Table VII-9, p. 57). Portion (g/day) = energy requirement ÷ (food kcal/kg ÷ 1000). Source: FEDIAF, Nutritional Guidelines for Complete and Complementary Pet Food for Cats and Dogs, July 2024.

Ingredients

  1. 1Chicken
  2. 2Whole Grain Wheat
  3. 3Corn Gluten Meal
  4. 4Chicken Fat
  5. 5Brewers Rice
  6. 6Egg Product
  7. 7Flaxseed
  8. 8Dried Beet Pulp
  9. 9Chicken Liver Flavor
  10. 10Wheat Gluten

What we like

  • ✓fresh meat first ingredient
  • ✓natural preservatives
  • ✓taurine declared
  • ✓L-carnitine
  • ✓EPA/DHA declared
  • ✓fruits and vegetables

Points of concern

  • ⚠corn and wheat present
  • ⚠corn and wheat gluten
🥇
Feeding TrialsAAFCO feeding trial declared: +6 pts (Gold level)
✓ Verified data

www.petsmart.com — guaranteed analysis and ingredient list mirrored from the Hill's label, read 2026-09-03 · replaces a dry-matter conversion

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Frequently asked questions about Hill's Science Diet Senior 11+

What is the technical score of Hill's Science Diet Senior 11+?
Hill's Science Diet Senior 11+ (Hill's Science Diet) scores 67.5/100 under the My Pet Magazine methodology — a weighted average of the IDNM nutrient density index (31 points) and the IPFI ingredient purity index (100 points), by the formula (IDNM × 0.55) + (IPFI × 0.45). The analysis is 100% algorithmic, with no interference from brands.
How much protein does Hill's Science Diet Senior 11+ have?
On a dry-matter basis (removing the effect of moisture), Hill's Science Diet Senior 11+ has 30.43% protein and 19.57% fat. Converting to a dry-matter basis allows a fair comparison between foods for cats with different moisture levels.
Is Hill's Science Diet Senior 11+ a good food for cats?
Under the My Pet Magazine classification, Hill's Science Diet Senior 11+ is "Solid" (score 67.5/100). Strengths: fresh meat first ingredient, natural preservatives, taurine declared. Points of concern: corn and wheat present, corn and wheat gluten. Talk to a veterinarian before changing the diet of your cat.

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