Tuna Fillet & Mackerel in Gravy Topper

Fish broth is used in pet food primarily as a flavor and moisture enhancer, providing modest amounts of fish-derived protein, amino acids, minerals and sometimes trace omega‑3s but not serving as a primary source of complete nutrition. It can improve hydration and entice picky, senior, or ill dogs and cats to eat, but caregivers should watch for high sodium, added seasonings (especially onion or garlic), potential fish allergies, and variable quality depending on processing.

Tuna fillet is commonly used in pet foods and treats as a highly palatable, lean animal protein that provides EPA/DHA omega‑3 fatty acids, B vitamins (notably B12) and minerals like selenium, supporting skin and coat condition, cognitive health and general protein needs for both dogs and cats. It should be fed in moderation and within a balanced diet because frequent large servings—especially canned tuna—can contribute to mercury and excess sodium exposure, and raw tuna may carry parasites or enzymes that affect thiamine; prefer cooked, boneless, unsalted preparations and consult your veterinarian for long‑term use.

Mackerel is a fatty fish commonly used in pet foods as a high‑quality animal protein and a rich source of omega‑3 fatty acids (EPA and DHA), often added for flavor, palatability and healthy fats. Its omega‑3s support skin and coat condition, immune and joint health in dogs and cats, but owners should be aware of potential heavy‑metal accumulation, food sensitivities, and higher fat or sodium in some preparations, so choose properly processed, deboned sources from reputable suppliers.

Potato starch is a highly digestible carbohydrate commonly used in pet foods as a binder, thickener and texture agent to help kibble formation, stabilize wet formulas and create chewy treats. It provides readily available energy but is low in protein, fat and micronutrients, so while generally safe, its high glycemic load and limited nutritional value mean it should be used sparingly—particularly for overweight pets, diabetic animals or cats on low‑carbohydrate diets, and excessive amounts can sometimes contribute to loose stools.

Guar gum is a soluble plant-derived fiber commonly used in pet foods as a thickener, stabilizer and emulsifier to improve texture, moisture retention and prevent separation in wet foods, gravies and coatings. It provides little nutritional value beyond soluble fiber—which can help stool consistency and modestly slow digestion—but excessive amounts may cause gastrointestinal upset or affect nutrient absorption, so it is used at controlled low levels and is generally considered safe for most dogs and cats.