Wellness Chicken & Beef

7 ingredients in this list are ones we hold sourced evidence on , and 2 of them are genuinely contested rather than merely unpopular online.

• Peas · ingredient 4ContestedA pulse (legume) used in many grain-free foods as a plant protein and carbohydrate source. Peas are central to an open FDA investigation, begun in July 2018, into a possible link between diets high in peas, other pulses, and potatoes and canine dilated cardiomyopathy (DCM); 93% of reported products contained peas and/or lentils.
• Potato · ingredient 5ContestedA starchy tuber used as the carbohydrate base in many grain-free foods (it is a vegetable, not a cereal grain). The FDA's open 2018 investigation into diet-associated canine DCM listed potatoes 'in various forms' as main ingredients of interest alongside pulses such as peas and lentils.
• Beet Pulp · ingredient 9Well supportedThe fibrous material left after sugar is extracted from sugar beets, included as a moderately fermentable fiber source (commonly around 5 to 7.5% of the diet). Controlled feeding studies show it supports firm, good-quality stools and short-chain fatty acid production without impairing overall nutrient digestibility, so the 'cheap filler' characterization is not supported by the evidence.
• Flaxseed (ALA omega-3) · ingredient 8NeutralA plant source of the short-chain omega-3 ALA. Dogs convert ALA to the long-chain omega-3s inefficiently: a controlled feeding study (Dunbar 2010) found flaxseed raised serum EPA but produced no measurable DHA.
• Cassia Gum · ingredient 11NeutralA gelling agent made from the purified endosperm of Cassia seeds, used mainly in canned and wet foods. It is specifically authorized in the EU as a pet-food thickener: EFSA (2017) concluded that purified semi-refined cassia gum meeting the food-additive specification (under 0.5 mg anthraquinones/kg) is safe for dogs and cats up to the permitted feed level.
• Xanthan Gum · ingredient 12NeutralA fermentation-derived polysaccharide used as a thickener and stabilizer, mainly in wet and gravy-style foods. EFSA's 2017 re-evaluation found no safety concern and concluded no numerical ADI was needed; direct studies in dogs are limited, but at the small amounts used it acts as a non-absorbed, largely fermentable fiber.