Hill's Science Diet
A science-led brand with a deep, well-researched prescription range — clinically rigorous and consistent. Outside the therapeutic lines, though, the value is below average for the price: the standard panels lean on corn, grain and by-product meals rather than named single-source protein, and you carry a vet-clinic price premium for the brand and its shelf presence. The prescription range is the reason to buy it, not the everyday food.
Scored by the Pet Reviews independent review board
Independent scoring · Updated June 2026 · Not veterinary advice
Overall score
Weighted across six areas · /100
- 0
- Value
- 0
- Ingredients
- 0
- Transparency
Brand facts
- Ownership
- Hill's Pet Nutrition (Colgate-Palmolive)
- Country of manufacture
- USA / Multiple
- Retailer relationship
- Independent — widely stocked
- Product types
- Dry, Wet, Prescription
- Price tier
- Super-premium ($$$$)
- Overall score
- 66/100 · Average
Hill's Science Diet is a strong choice if…
- ✓Vet-prescribed therapeutic diets
- ✓Genuine condition-specific feeding
- ✓Senior and weight-management cases under vet guidance
May not be the best fit if…
- —You want named-meat ingredients and value on everyday feeding
The Hill's Science Diet range
Cost / day
$2.70
~15kg adult
Cost / feed
$1.35
2 meals/day
Price / kg
$11.58/kg
12kg bag
First ingredient
Chicken
Protein
22%
Reliable and vet-trusted; check price per kg against premium brands before defaulting to it.
Cost / day
$2.90
~15kg adult
Cost / feed
$1.45
2 meals/day
Price / kg
$12.42/kg
12kg bag
First ingredient
Chicken
Protein
22%
A solid non-prescription sensitive-stomach option; Prime100 is our value-led alternative.
Cost / day
$3.62
~15kg adult
Cost / feed
$1.81
2 meals/day
Price / kg
$12.08/kg
12kg bag
First ingredient
Chicken
Protein
0%
This is Hill's flagship everyday adult kibble, and it earns a solid 68/100 as a dependable, vet-recommended all-rounder. Real chicken leads the recipe, backed by Hill's signature consistency and quality control.
Cost / day
$4.96
~15kg adult
Cost / feed
$2.48
2 meals/day
Price / kg
$16.53/kg
5.44kg bag
First ingredient
Chicken
Protein
0%
A genuinely well-evidenced weight-management kibble that scores 70/100, one of the stronger picks in the Hill's range. Chicken leads, and the L-carnitine and higher-fibre formula is backed by Hill's own feeding studies.
Cost / day
$4.69
~15kg adult
Cost / feed
$2.35
2 meals/day
Price / kg
$15.64/kg
7.03kg bag
First ingredient
Chicken
Protein
0%
A thoughtfully formulated everyday kibble for dogs with fussier digestion or itchy skin, landing at 69/100. The small-bite kibble plus prebiotic fibre and skin-supporting omega-6s make it a sensible default for sensitive adults.
Cost / day
$2.79
~15kg adult
Cost / feed
$1.40
2 meals/day
Price / kg
$9.31/kg
20.4kg bag
First ingredient
Whole Grain Corn
Protein
0%
A high-energy, large-bag formula aimed at working and very active dogs, scoring 62/100. It delivers the calories and the big-bag value, though whole grain corn leads the ingredient list rather than a named meat.
Cost / day
$4.92
~15kg adult
Cost / feed
$2.46
2 meals/day
Price / kg
$16.39/kg
0.363kg bag
First ingredient
Chicken
Protein
0%
A digestion-focused wet food that adds moisture and palatability to the bowl, sitting right on Hill's average at 66/100. Chicken leads and the ActivBiome+ prebiotic technology is the recipe's clear selling point.
Cost / day
$8.91
~15kg adult
Cost / feed
$4.46
2 meals/day
Price / kg
$29.72/kg
1.58kg bag
First ingredient
Chicken
Protein
0%
A purpose-built kibble for older indoor cats that scores 67/100, with chicken first and organ-support nutrition front and centre. The ActivBiome+ blend and controlled minerals make it a sensible everyday choice for cats aged seven and up.
Cost / day
$8.72
~15kg adult
Cost / feed
$4.36
2 meals/day
Price / kg
$29.08/kg
1.58kg bag
First ingredient
Chicken
Protein
0%
A growth-focused kibble for indoor kittens that earns 68/100, with chicken first and natural DHA for brain and eye development. It is a reassuringly complete-and-balanced start for kittens up to a year old.
Cost / day
$8.53
~15kg adult
Cost / feed
$4.27
2 meals/day
Price / kg
$28.45/kg
1.58kg bag
First ingredient
Chicken
Protein
0%
A reduced-calorie everyday kibble for less active or indoor adult cats, scoring 65/100. Chicken leads and the lighter formula helps manage weight without dropping protein quality.
Where to buy Hill's Science Diet
Prices vary by retailer and change with sales, member and subscription pricing — always compare price per kg. Pricing on this site is a guide only, and nothing here is veterinary advice.
Read our full Hill's Science Diet review
Score breakdown, pros and cons, who it's best for, price comparison across retailers and the best alternatives — the editorial verdict in full.