

Hill's Science Plan
Hill's Science Plan Adult 1+ Perfect Weight Large review
Hill's Science Plan Adult 1+ Perfect Weight Large is built for the big dog who has quietly outgrown their collar, and the numbers show the brief clearly. Chicken and turkey meal leads the list at 10% chicken and 15% total poultry, with fat held down to 11.0% and fibre pushed up to 11.9%. Energy comes in at 317 kcal per 100g, against the 357 typical of adult dry food. It sits in our Good band, a placement driven by how the bulk is achieved. Whether the food does its job is a separate question.
Our view
Likely to suit
Watching a big dog thicken through the middle is a familiar worry, and this recipe is written to answer it without leaving them hungry.
- Large breed adults who have got heavy for their frame, with energy held to 317 kcal per 100g
- Dogs that beg between meals, since the fibre at 11.9% is there to keep a measured bowl filling
- Owners who want protein kept up while the calories come down, with protein declared at 25.1%
- Households feeding a mature adult or an older dog, as the label covers both
- Owners who like the meat named and first, with chicken and turkey meal at the head of the list
Worth watching
There are a few things about how the bulk is achieved that you will want to know.
- Cellulose sits seventh on the list, a purified fibre that adds volume and nothing else
- Maize is second and maize protein meal third, so the plants on the list add to the protein figure
- Wheat appears on the list, a point to check if your dog has ever struggled on a wheat food
- Digest and animal fat both go without a species, so this recipe cannot anchor an exclusion trial
Written by our editorial team. Independent guidance, not veterinary advice.
How this scores
How we scoreThe Details
Dog fit
Watching a big dog thicken through the middle is a familiar worry, and this recipe is written to answer it without leaving them hungry. There are a few things about how the bulk is achieved that you will want to know.
Dry
Adult, Senior
Large
Chicken
The score, in context
The Good band is our reading here, matching the ordinary adult dry food, and this is still the one that needs the most context. On the analysis alone it is a well aimed weight recipe: protein converts to 27.3% of dry matter, fat to 12.0%, and estimated carbohydrate to 41.8% against the 46.2% typical of adult dry food. Energy sits at 317 kcal per 100g where 357 is the norm. What the ingredient reading cannot warm to is the way the bulk is made, with cellulose and pea bran meal padding out the volume and maize protein meal lifting the protein figure. For an overweight large dog on a measured ration, the food still does what its name promises.
What's in it
Ingredients, as declared: Chicken and turkey meal (chicken 10%; total poultry 15%), maize, maize protein meal, pea bran meal, wheat, broken rice, cellulose, digest, dried tomato pomace, flaxseed, animal fat, dried beet pulp, coconut oil (2.2%), minerals, dried carrots.
Named ingredients
Nutritional additives
ADDITIVES PER KG: Nutritional additives: 3b103 (Iron) 74.8mg, 3b202 (Iodine) 1.8mg, 3b405 (Copper) 7.4mg, 3b502 (Manganese) 7.7mg, 3b603 (Zinc) 131mg, 3b801 (Selenium) 0.2mg, with natural antioxidant.
Ingredient notes
The meat leads for once. Chicken and turkey meal is the first ingredient, 10% chicken inside 15% total poultry. The label names both birds, and since the meal went in dried, that declared figure survives into the kibble. On a food this light on calories, having the animal content at the front is exactly where you want it.
Maize and maize protein meal take the next two places. Maize protein meal is a concentrated plant protein and it is doing real work behind the 25.1% on the analysis, so the headline protein is not all bird. That is common enough in weight recipes, where the fat has to come out and something has to hold the protein up, but it is worth reading the number with that in mind.
Three ingredients carry the bulk: pea bran meal, cellulose and dried beet pulp, and between them they push crude fibre to 11.9%, which converts to 12.9% of dry matter. Beet pulp and pea bran are proper food fibres. Cellulose is the awkward one, a purified powder that is indigestible by design and adds volume and nothing more, and it is the entry a careful label reader will like least. Its purpose is honest enough, which is to let a hungry dog have a full bowl on a reduced ration.
Fat is held to 11.0%, and coconut oil at 2.2% is the notable choice among what remains. It is made largely of medium chain fatty acids, and the body handles those differently from ordinary long chain fats. Flaxseed brings the plant omega 3s along. Dried tomato pomace and dried carrots round the list off at trace level, carrots being a genuinely useful little addition and the pomace mostly more fibre.
The rest of the analysis backs the brief. Estimated carbohydrate sits at 41.8% of dry matter against the 46.2% typical of adult dry food, energy at 317 kcal per 100g against a typical 357, and calcium at 0.98% of dry matter. Every trace mineral is dosed in print, zinc at 131 mg per kilo, iron at 74.8 mg, copper at 7.4 mg, manganese at 7.7 mg, iodine at 1.8 mg and selenium at 0.2 mg.
Price and value
Sold as a 12kg bag.
On the standard maintenance estimate of 110 kcal × bodyweight^0.75, a 15kg adult in moderate condition wants about 840 kcal a day. That is roughly 265 grams of this food, more grams than a richer kibble needs because each gram carries less energy. The label's table runs to 640 grams a day for a dog of 80kg and over. On a weight plan, portion for the dog you want to see and weigh the food out on scales.
Nutritional analysis
Declared analysis
25.1%
11%
11.9%
5.5%
8%
Dry weight
27.3%
12%
12.9%
6%
41.8%
As-fed composition
Estimated breakdown of the finished product by ingredient category, from the declared ingredient list and ingoing weights. These are estimates, not measurements.
36.9%
58.1%
0.8%
2.4%
1.8%
Pricing & size
- Pack size
- 12 kg
- Retailer pricing
- Coming soon
Live retailer pricing is not yet available for this food. Prices, cost per day and where to buy will appear here once retailer data is live.
Ingredients and nutrition are taken from manufacturer data. Retailer pricing is not yet live for this food.
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