Skip to content
Off the Leash
K9 Optimum Puppy Maxi – —

K9 Optimum

K9 Optimum Puppy Maxi review

63.2/100Good
DryPuppy

A large breed growth kibble that gets the number that matters right: calcium at 1.09% of dry matter, where a big pup's bones want it. Two forms of chicken lead, salmon appears three ways behind them, and DHA has its own named source. It sits in our Good band.

Where to buy: coming soon
Live retailer links are coming soon. Once we have them from UK retailers, where to buy and the best price will appear here.

Our view

Likely to suit

  • Large breed puppies, with calcium printed and in range
  • Owners who want brain and eye nutrients named, from marine algae and marigold
  • Puppies that thrive on chicken
  • Homes happy with fish in the bowl
  • A steadier energy level, at an estimated 357 kcal per 100g

Worth watching

  • Prairie meal mid-list, unexplained and with no species
  • Glucosamine, mussel and MSM with no doses, so a gesture towards joints
  • Chicken, salmon and egg together, so neither single-protein nor fish free
  • Rice and maize high up, with carbohydrate at an estimated 43.5% of dry matter

Written by our editorial team. Independent guidance, not veterinary advice.

How this scores

How we score
63.2/100Good
Protein and processingGood
Nutritional balanceGood
TransparencyOutstanding
ValueGood

The details

Dog fit

Listed for large breed puppies. Feed to the chart for the adult weight your pup will reach, keep them lean while the frame fills out, and revisit the amount monthly.

Food type

Dry

Life stage

Puppy

Breed size

Large

Main protein

Chicken

The score, in context
  1. K9 Optimum Puppy Maxi 63.2

All one Good. Typical dry food: Good.

A declared, in-range calcium figure on a bag sold for big pups earns the placement; the rice and maize starch and the undosed tail keep it there.

What's in it
  • Chicken dried19%Water already out, so most of the share carries through.
  • Chicken18%Goes in wet and shrinks in cooking.
  • Rice, maize, whole oatsThe starch load, above the puppy field.
  • Chicken gravy, chicken fatThe poultry stays on one named species.
  • Salmon, salmon meal, salmon oil4%; 1% oilMarine omegas a growing brain and coat use best.
  • Prairie mealNot explained on the label and no species named.
  • Brewer's yeast, beet pulp, full fat linseed1% linseed
  • Egg powder, marine algaeA little digestible protein, and DHA from a plant source.
  • Minerals, marigoldMarigold for lutein.
  • Rosemary, pomegranate, MOS, glucosamine, nucleotides, turmeric, blackcurrant, yucca, green lipped mussel, MSMNo printed doses; read as seasoning.

Properly dosed, with taurine at 250 mg/kg, vitamin E at 340 mg/kg, and zinc as both sulphate and glycine chelate.

Named ingredients

Chicken Dried (19%), Chicken (18%), Rice, Maize, Chicken Gravy, Salmon (4%), Chicken Fat, Whole Oats, Prairie Meal, Salmon Meal, Brewers Yeast, Beet Pulp, Full Fat Linseed (1%), Salmon Oil (1%), Egg Powder, Marine Algae (Source Of Docosahexaenoic Acid (Dha)), Minerals, Marigold (Source Of Lutein), Rosemary, Pomegranate, Mannan Oligosaccharides, Glucosamine, Nucleotides, Turmeric, Blackcurrant, Yucca Schidigera, Nz Green Lipped Mussel, Methylsulphonylmethane
Against the range

One large breed puppy kibble: dried and freshly prepared chicken first, then rice and maize, salmon in three forms, and marine algae named as a DHA source. A long tail of joint and gut extras follows without doses.

Nutritional analysis

Declared analysis

Energy
357 kcal/100g

Estimated using Modified Atwater factors*

Protein

28%

Fat

14%

Fibre

3%

Ash

7%

Moisture

8%

Dry weight

Protein

30.4%

Fat

15.2%

Fibre

3.3%

Ash

7.6%

Carbs

43.5%

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.

Meat

52.3%

Carbs

40.5%

Veg

0.2%

Oils

5%

Other

2.1%

Pricing & size
Price per kilo
£3.17 (RRP)
Pack
2kg, 12kg
A 15kg dog eats (our estimate)
210 to 255 g a day, 230 in the middle
Cost per day, 15kg dog
£0.73

Feed to the chart for your pup's expected adult weight, not the 15kg adult figure.

Budget end of the dry market, and fair value for the quality on offer.

Ingredients and nutrition are taken from manufacturer data. Retailer pricing is not yet live for this food.

Related dog food guides

Ranked shortlists that include foods like this one.

All reviews

Featured feeding accessories

All feeding accessories
Beco Steady Bowl

Beco

Steady Bowl

A recycled plastic dog bowl with a wide weighted base that stays where you put it.

£
View on Amazon
Petface Pet Food Scoop

Petface

Pet Food Scoop

A light plastic food scoop that makes measuring kibble a daily habit.

£
View on Amazon
Petface Ceramic Bone Bowl, 15cm

Petface

Ceramic Bone Bowl, 15cm

A 15cm ceramic dog bowl in cream and green, sized for toy and small breeds.

£
View on Amazon
Mason Cash Cane Dog Bowl, 20cm

Mason Cash

Cane Dog Bowl, 20cm

The Derbyshire stoneware classic, a 20cm dog bowl holding 1.6 litres and dishwasher safe.

££
View on Amazon

Reviewed by Off the Leash Editorial

Last updated 28 August 2026