CatWell
Ingredients

Cat Food Ingredients

Not every questionable ingredient rises to the level of a scored risk factor. These pages cover common ingredients that cat owners ask about — what they are, why they appear in food, and why they are or are not included in our risk scoring.

Cellulose Filler
Plant-derived fibre filler. No nutritional value for cats; reduces food quality at high levels.
Chicken By-Product Meal Common ingredient
Rendered chicken parts (necks, feet, intestines). Legitimate protein source, but transparency is low.
Meat and Bone Meal Vague ingredient
Rendered mammal tissues and bone of unspecified origin. Variable quality, vague labelling.
Corn / Maize Grain filler
Cheap starch and protein extender. Displaces animal protein. Covered by the grain-filler risk factor.
Pea Protein Protein extender
Common protein extender in grain-free foods. Inflates protein percentage without the amino acid profile of meat.
Taurine Required nutrient
Essential amino acid cats cannot synthesise in adequate amounts. Supplementation is required.