Open FarmPasture-Raised Lamb Dry Cat Food

A red-meat protein, fattier than chicken and with a strong flavor many dogs prefer. Fresh lamb is weighed wet, so it sits higher on the list than the meal form would. Lamb was once the standard novel protein for allergy diets, and with wider use it now shows up as a reported allergen too, though still less often than beef or chicken.

A lean, mild fish, often cod, haddock, pollock or a mix, used as a protein source. Whitefish is lower in fat and omega-3 than salmon or herring and is chosen for its gentle flavor and digestibility. The term covers several species, so it is less specific than salmon or herring for an owner tracking a fish allergy. Whitefish meal is the concentrated, dried form.

A small oily fish used as a protein and as a natural source of omega-3 fats. Being low on the food chain, herring carries less mercury than tuna. Herring meal is the concentrated, dried form and contributes far more protein per gram than whole herring, which is mostly water. It is a named fish, which helps owners tracking an allergy. Herring oil is listed separately as a fat.

A legume used as a carbohydrate and plant protein, common in grain-free foods. Chickpeas supply fiber, folate and protein that lifts the number on the bag without adding meat. Legume-heavy grain-free foods were part of the FDA's 2018 to 2022 look at diet-associated heart disease in dogs, which did not establish a cause. A food that lists chickpeas or peas in the first few ingredients is leaning on plant protein.