Tuna is a firm saltwater fish sold as fresh steaks, frozen loins, and canned products packed in water, oil, or broth. It is used in salads, sandwiches, casseroles, sushi, and pasta dishes. Plain tuna provides protein, selenium, and omega-3 fats.
Species and processing affect risk. Albacore and some larger tuna species carry higher mercury levels than smaller fish, and canned products may add salt or oil. Flavored pouches often include mayonnaise, spices, garlic, or broth concentrates. Raw tuna dishes may include high-sodium sauces.
Tuna salad made with mayonnaise, relish, celery, or onion is a common household preparation and should not be shared with pets. Lunch pouches may include concentrated flavor packets. Plain fish without mix-ins is the lowest-risk option.
For pets, tuna should be occasional, not a daily staple. Offer small portions of plain cooked tuna or plain water-packed tuna with no added salt. Avoid oil-packed tins, spicy preparations, and frequent servings.
