The scores
Eukanuba Adult Medium Breed Chicken: B (76/100) — Chicken, Corn Meal, Whole Grain Sorghum, Chicken By-Product Meal, Chicken Fat (preserved with Mixed Tocopherols).
Purina Pro Plan Savor Shredded Blend: C (58/100) — Chicken, Rice, Whole Grain Wheat, Poultry By-Product Meal, Whole Grain Corn.
How the ingredients compare
Here are the first five ingredients on each label — the part of the panel that drives most of the score under our published rubric:
Eukanuba: Chicken, Corn Meal, Whole Grain Sorghum, Chicken By-Product Meal, Chicken Fat (preserved with Mixed Tocopherols)
Purina Pro Plan: Chicken, Rice, Whole Grain Wheat, Poultry By-Product Meal, Whole Grain Corn
Both panels open with real chicken, which is the right place to start. Eukanuba follows with corn meal and whole grain sorghum, then chicken by-product meal and named chicken fat — so the carbohydrate base is corn-forward, but the fat is identified and the chicken lead is genuine. Pro Plan Savor follows chicken with rice, whole grain wheat, poultry by-product meal, and whole grain corn, stacking two grains plus corn plus a generic poultry by-product meal high on the list. The scoring difference comes down to that stack: KibbleIQ treats a named chicken fat and a single corn source more favorably than rice-plus-wheat-plus-corn paired with generic poultry by-product. Neither avoids by-product meal, and neither is grain-free, so pulse-legume DCM context isn’t a factor here. The structural edge, and the 18-point gap, is Eukanuba’s.
Where Eukanuba pulls ahead
Chicken-first with a named fat source: Eukanuba Adult Medium Breed Chicken (B/76) leads with real chicken and, importantly, names chicken fat (preserved with mixed tocopherols) as its fat — not a vague “animal fat” blend. That transparency, plus the chicken lead, is the backbone of its B-tier score. The recipe is built on Mars Petcare’s formulation depth, sitting a clear step above its sibling brand Iams in positioning and price. At roughly $1.60–2.10 per pound across PetSmart, Petco, Amazon, and Chewy, it lands in true premium territory without reaching boutique pricing. The honest caveat: corn meal and chicken by-product meal both appear on the panel, so this isn’t a clean-label formula — the named-meat lead and identified fat are what carry it past Pro Plan’s Savor blend. If you’re choosing between these two specifically, the chicken-forward structure is the stronger foundation. Shop on Amazon →
3D DentaDefense dental benefit: Eukanuba’s standout functional feature is its 3D DentaDefense kibble, engineered with a shape and texture meant to help reduce tartar buildup as the dog chews. For owners of medium-breed dogs — a group prone to dental tartar — that mechanical cleaning action is a tangible, day-to-day value-add that Pro Plan’s Savor Shredded Blend doesn’t advertise. KibbleIQ rewards functional structure like dental benefits, and this is a genuine point in Eukanuba’s favor rather than marketing gloss. Dental kibble isn’t a substitute for brushing or professional cleanings, but as a passive supplement to oral care it earns real credit. Combined with the chicken-first lead, the dental engineering helps explain why this formula scores a tier above Pro Plan despite both panels carrying corn. For a household that wants nutrition and a little extra mouth-health support in one bag, this is a meaningful differentiator.
Breed- and size-tailored recipes: Eukanuba builds its dry lineup around life-stage, breed, and body-size targeting — this particular recipe is tuned for medium-breed adults, with kibble size, calorie density, and joint-support nutrients calibrated to that frame. That specificity is a real advantage over a one-size-fits-most approach: a medium-breed dog has different energy and structural needs than a toy or giant breed, and matching the formula to the dog reduces guesswork. Mars Petcare’s research and formulation infrastructure backs these recipes, giving the line consistency batch to batch. When you transition, mix in the new food over 7–10 days — start around a quarter Eukanuba, then increase the ratio every couple of days to let the gut adjust. Feed to the bag’s medium-breed weight chart and adjust for activity. For owners who want a recipe deliberately built for their dog’s size rather than a generic adult blend, the tailored structure is a clear reason to pick Eukanuba here.
Where Purina Pro Plan holds its own
Shredded-piece palatability with real chicken first: Purina Pro Plan Savor Shredded Blend (C/58) leads with real chicken and pairs hard kibble with soft, meaty shredded pieces — a texture combination that’s genuinely effective at winning over picky or food-bored dogs. Palatability matters: the best-scoring bag does nothing if the dog won’t eat it, and Savor’s shredded format has a strong track record at the bowl. At roughly $1.60–2.00 per pound, it’s priced right alongside Eukanuba, so cost isn’t the deciding factor. The score sits at C because rice, whole grain wheat, poultry by-product meal, and whole grain corn all appear high on the panel — but the chicken-first lead is real, and for a dog that turns its nose up at standard kibble, the shredded texture can be the difference between a clean bowl and wasted food. If palatability is your binding constraint, Savor earns its place. Shop on Amazon →
Vet-channel trust and broad availability: Pro Plan is one of the most frequently vet-recommended brands in the U.S., carrying real weight for owners who lean on their veterinarian’s guidance, and Purina’s research footprint and quality-control infrastructure are deep. Just as important is reach: where Eukanuba lives mostly in pet-specialty and online channels, Pro Plan is genuinely everywhere — pet stores, mass retailers, and grocery shelves — so a bag is rarely more than a quick trip away. For owners who value never being caught without food, or who weight a vet’s familiarity with a brand heavily, that ubiquity and clinical credibility are real advantages that the ingredient grade alone doesn’t capture. Pro Plan also backs its lineup with consistent manufacturing, so the bag you buy in one city matches the one across the country. The C/58 score reflects the Savor panel specifically, not the brand’s reliability or its standing in the veterinary community.
A bigger specialized SKU range that can flip the verdict: The Savor Shredded Blend is only one entry in a Pro Plan catalog far broader than this comparison suggests — Sport (high-protein for working dogs), Sensitive Skin & Stomach (a salmon-and-rice recipe that scores higher than Savor), and other targeted lines all sit under the same brand. That range is a genuine strength: a shopper who steps up to Pro Plan Sensitive Skin & Stomach salmon, for instance, is buying a stronger panel than Savor’s, and that single change can erase or even reverse the gap with Eukanuba. So while Savor specifically lands at C/58, treating Pro Plan as a one-formula brand undersells it. If your dog has a sensitive stomach, sensitive skin, or high activity needs, the right move is to match the sub-line to the need rather than default to Savor. The brand’s depth is its quiet advantage here.
The bottom line
On ingredient structure, Eukanuba Adult Medium Breed Chicken (B/76) is the better fit of these two, beating Purina Pro Plan Savor Shredded Blend (C/58) by a full tier — 18 points — on the strength of its chicken-first lead, named chicken fat, and 3D DentaDefense dental and breed-tailored structure. But be clear-eyed: both carry corn and a by-product meal, so this is two solid mainstream brands, not a clean-label contest. Pick Eukanuba if you want the higher-scoring panel, dental support, and a recipe built for your dog’s size. Pick Pro Plan Savor if palatability is your top concern — those shredded pieces win over fussy eaters — or if you value vet-channel trust and grocery-aisle availability. And remember the asterisk: Savor is one SKU in a deep catalog. Stepping up to a stronger Pro Plan line like Sensitive Skin & Stomach salmon changes this verdict. For a like-for-like, shelf-to-shelf choice, though, Eukanuba is the structural winner.