FarminaN&D White - White Coat Dental Treat with sea bass, Norwegian kelp and fennel mini

A thickener from the guar bean, used to give wet food its texture and hold gravy together. It is a soluble fiber, and in large amounts it can soften stool. Not an allergen of note. Its presence tells you about texture, not nutrition.

A dried seaweed added as a natural source of iodine and trace minerals. Iodine is needed for thyroid function, and kelp is one of the few whole-food sources of it. The iodine content of kelp varies a great deal between harvests, so it has to be tested and dosed carefully, and the label will not tell you whether it was. Pets with thyroid disease should get the vet's view on foods that use kelp as the main iodine source.

Purified plant fiber, usually from wood pulp, added as an insoluble fiber. It bulks stool, dilutes calories in weight-control foods and helps move hair through a cat's gut, which is why it is common in hairball formulas. It passes through undigested and supplies fiber only. The wood origin sounds alarming, but the product is the same purified cellulose used in human foods.

A root added for its inulin, a fiber that gut bacteria ferment. A prebiotic feeds the beneficial bacteria in the gut, and the pet gets the benefit second-hand. Studies in dogs show modest changes in gut bacteria and stool quality at the levels used in food. It is safe, and in large amounts can loosen stools, so it appears near the bottom of the list.

An essential amino acid, added to top up protein quality and, in cat food especially, to acidify urine and discourage the struvite crystals behind some urinary problems. Routine and safe in a complete food. If your cat has a history of the other crystal type (oxalate), urine acidifiers are a vet conversation.

The husk of a seed, the same fiber sold for people as Metamucil, added for its soluble, gel-forming fiber. It absorbs water and firms loose stool while easing constipation, so it appears in digestive, hairball and some weight-control foods. It is safe, and in large amounts it needs plenty of water to work well. It usually shows up in foods designed around stool quality.

A potassium source and an electrolyte. Potassium keeps muscles and nerves working, including the heart, and cats lose more of it than dogs do. It also stands in for part of the salt in foods that are formulated lower in sodium. A routine additive with no allergy or safety concern at food levels.

A phosphate salt used to keep wet food moist and hold its texture, and in some dry foods to reduce tartar by binding calcium in saliva. It is an approved additive in human and pet food. Because it adds phosphorus, it is one of the ingredients a vet may ask you to avoid in a cat or dog with kidney disease, where phosphorus intake matters. For healthy pets at label levels it is not a concern.

Sodium and chloride, both essential, plus a palatability boost. Pets need less than people, and the minimum is set in the nutrient profiles the food is formulated to. Salt high on the list of a treat is a flavor choice; salt near the end of a complete food is nutrition. Ask your vet before choosing a low-sodium food for heart or kidney disease rather than reading labels alone.

A building block of cartilage, usually from shellfish shells, added to joint-support and senior foods. The evidence in dogs is mixed: some trials show modest improvement in arthritis signs, others none, and the dose in a food is typically well below the dose used in those trials. No safety issue at food doses. If joint support is the goal, the amount per cup, stated on the bag, is the number to compare; the ingredient's presence alone says little.

A cartilage component, usually from cattle or chicken cartilage, almost always paired with glucosamine in joint-support foods. The same caveats apply: the evidence in dogs is modest, the dose in a complete food is usually below that used in supplement trials, and the amount on the bag is what to compare. Because it usually comes from chicken or beef cartilage, strict allergy diets may need to check the source.

A fat-soluble antioxidant that protects cells and the fats in the food itself. It is in nearly every complete food, both as a nutrient and, under the name mixed tocopherols, as the natural preservative that keeps fat from going rancid. Deficiency is rare in pets eating a complete diet. Nothing to worry about on a label, and a sign the maker is preserving with vitamin E rather than synthetic chemicals.

A compound made from amino acids that helps cells burn fat for energy. It is found naturally in meat, and it is added to many weight-control and senior foods on the reasoning that it supports lean body mass during weight loss. The evidence in dogs is modest and the amounts used are safe. Its presence usually signals a food designed for weight management.