Hill's Science Diet Adult Perfect Weight Small & Mini Dry Dog Food
- Dry Food
- Bag
- Veterinary Diet
- Dog
- Better rated than 85%
- More reviewed than 74%
A vet recommended weight management kibble sized for small and mini breed dogs, worth considering when a vet has already flagged weight as an issue.
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How it ranks among the 155 dry food we track
4.8★ across 7,100 Amazon ratings, Bayesian-smoothed toward the category average.
7,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
9,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 155 dry food we track - how the scorecard works · full dry food data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This is the 4 pound bag of Hill's Science Diet Perfect Weight, a chicken flavor dry kibble formulated for adult small and mini breed dogs between 1 and 6 years old. It targets weight management rather than general maintenance feeding.
Weight management dog foods work by controlling calorie density and the protein to fiber ratio rather than just cutting portions, and Hill's markets this line around a 10 week weight loss window per its own product notes. It sits within a veterinary diet category, so it is formulated with a specific outcome in mind rather than as an everyday kibble swap.
- 4 lb bag, chicken flavor
- Adult 1-6 years age range
- Small and mini breed sizing
- Weight management veterinary diet formula
Who it's for
Suited to owners of small or mini breed adult dogs who have been told by a vet that the dog is overweight or trending that way. Not built for puppies, large breeds, or dogs already at a stable healthy weight, since the formula is calorie controlled rather than general purpose.
Strengths and trade-offs
Drawn from this product's published specifications.
- Formulated for small and mini breed dogs specifically
- Vet recommended weight management line
- Small 4 lb bag suits smaller dogs' daily intake
- 4 lb bag needs frequent reorders for daily feeding
- Weight management diets require portion discipline to work
Performance notes
The kibble is built around chicken as the named protein and is positioned by Hill's as a weight loss and lean muscle maintenance formula, with results framed around a 10 week window in the manufacturer's own product notes. As with any diet food, actual weight change depends on following the bag's feeding guide rather than free feeding.
Specifications
| Brand | Hill's |
|---|---|
| Model | 3821 |
| Dimensions & fit | |
| Item Weight | 4 pounds |
| Package Size Name | 4 Pound |
| Dog Breed Size | Small |
| Capacity & performance | |
| Age Range Description | Adult 1-6 |
| Included components | |
| Unit Count | 4 pounds |
| Included Components | Dog Food |
| Other details | |
| Container Type | Bag |
| Animal Food Diet Type | Veterinary Diet |
| Pet Type | Dog |
| Number Of Items | 1 |
| Best Sellers Rank | #564 in Pet Supplies (See Top 100 in Pet Supplies) #44 in Dry Dog Food |
| Product Benefits | Effective weight loss & maintenance, lean muscle support, trusted ingredients, vet recommended |
| Breed Recommendation | Small Breeds |
| Occasion | Birthday |
| Manufacturer Part Number | 3821 |
| Flavor | Chicken |
| Model Number | 3821 |
| Item Form | Dry Food |
| Recommended Uses For Product | Weight Management for Dogs |
| Additional Features | Weight loss support within 10 weeks, Long-lasting weight maintenance, Lean muscle support, Global ingredients, Veterinarian recommended |
| Manufacturer | Hill's Pet Nutrition |
| Allergen Information | Chicken Meat |
| Target Species | Dog |
| Customer Reviews | {'ratings_count': '7,192', 'stars': '4.8'} |
| Upc | 052742081144 052742382104 |
| Item Type Name | Perfect Weight, Dog Dry Food, Small Breed |
| Special Ingredients | Chicken |
| Asin | B00TH3MMDE |
| Specific Uses For Product | Weight Management |
Other Hill's dry food
How it compares
This product against the closest alternatives we track in dry food.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Hill's Science Diet Adult Perfect Weight Small & Mini Dry Dog FoodThis product | 4.8 / 5 | 7,100 | 4.7 / 5 |
| Royal Canin Size Health Nutrition Small Adult Dry Dog FoodROYAL | 4.8 / 5 | 9,900 | 4.7 / 5 |
| IAMS Proactive Health Adult Minichunks Premium Dry Dog FoodIAMS | 4.7 / 5 | 31,844 | 4.6 / 5 |
| Blue Buffalo Life Protection Formula Chicken & Brown Rice Adult Dry Dog FoodBlue | 4.7 / 5 | 29,281 | 4.6 / 5 |
| Cesar Small Breed Dry Dog Food for Small DogsCesar | 4.7 / 5 | 19,500 | 4.6 / 5 |
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Questions about the Hill's 3821
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size dogs is this bag meant for?
It is formulated for small and mini breed adult dogs, per the product's breed recommendation.
How long does the 4 lb bag last?
That depends on your dog's size and the feeding guide on the bag, which is not included in this listing data.