Is Instinct PeakBoost Grain-Free High-Protein Recipe with Real Salmon Safe for Dogs?

What's in this food

This is a well-constructed, protein-forward formula built around multiple salmon and fish sources. The ingredient list is largely whole-food based, with meaningful inclusions of organ meats, fruits, vegetables, and probiotics. There's relatively little filler, and the preservative approach is natural throughout. A few ingredients are worth a closer look, but the overall pattern here is quality-first.

What we flagged

Peas and Chickpeas — Both are legumes that appear mid-list. The FDA's ongoing investigation into a potential link between legume-heavy grain-free diets and dilated cardiomyopathy (DCM) hasn't produced a confirmed causal finding, but it's a legitimate open question worth monitoring with your vet. Canola Oil — A functional fat source, but highly processed and less nutritionally valuable than named fish oils or animal fats. Not harmful, just a filler fat. Montmorillonite Clay — Used as an anti-caking agent and mycotoxin binder. Generally considered safe in small amounts, but some formulas have tested for elevated aluminum content in clay-based additives. Tomato Pomace — A byproduct of tomato processing used as a fiber source. Nutritionally marginal and considered a low-value filler by many nutritionists.

What's good

Salmon leads the list as a whole-food protein, followed by menhaden fish meal and whitefish meal — both named, concentrated protein sources rather than vague "fish meal" blends. The freeze-dried beef, liver, spleen, and kidneys add organ nutrition that's genuinely bioavailable and nutrient-dense, not just window dressing. Ground flaxseeds and salmon oil provide omega-3s from multiple delivery points. The probiotic lineup (Lactobacillus acidophilus, Enterococcus faecium, Bacillus subtilis) is specific and multi-strain, which is more meaningful than a generic "probiotic blend." Fruits like blueberries, cranberries, and apples round out the antioxidant profile without dominating the formula.

Our take

At 90/100, this is a genuinely strong option for dogs who do well on high-protein, grain-free fish-based diets — the protein sourcing is transparent, the organ inclusions are real, and nothing harmful is in the formula. The main considerations are the legume content in the context of ongoing DCM research, and a couple of low-value filler ingredients that don't hurt but don't help. As always, every dog is different — age, breed, health history, and individual sensitivities all matter, so this analysis is a general guide, not a substitute for advice from your vet.