Fillers in Pet Food

Episode 5

"Fillers," a commonly used scary word to warn pet owners away from one product, and into the arms of another, but do we really know what that word means? What constitutes a filler anyway?

Nicole and Jez talk about what a filler ingredient actually is, and why some ingredients that commonly get the "filler" blame are unjustly slandered.

Image by Mathew Coulton


Beloshapka, A., Buff, P., Fahey, G. and Swanson, K., 2016. Compositional Analysis of Whole Grains, Processed Grains, Grain Co-Products, and Other Carbohydrate Sources with Applicability to Pet Animal Nutrition. Foods, 5(4), p.23.
Biel, W., Czerniawska-Piątkowska, E. and Kowalczyk, A., 2019. Offal Chemical Composition from Veal, Beef, and Lamb Maintained in Organic Production Systems. Animals, 9(8), p.489.
Kaplan, J., Stern, J., Fascetti, A., Larsen, J., Skolnik, H., Peddle, G., Kienle, R., Waxman, A., Cocchiaro, M., Gunther-Harrington, C., Klose, T., LaFauci, K., Lefbom, B., Machen Lamy, M., Malakoff, R., Nishimura, S., Oldach, M., Rosenthal, S., Stauthammer, C., O’Sullivan, L., Visser, L., William, R. and Ontiveros, E., 2018. Taurine deficiency and dilated cardiomyopathy in golden retrievers fed commercial diets. PLOS ONE, 13(12), p.e0209112.
Lyu, T., Liu, G., Zhang, H., Wang, L., Zhou, S., Dou, H., Pang, B., Sha, W. and Zhang, H., 2018. Changes in feeding habits promoted the differentiation of the composition and function of gut microbiotas between domestic dogs (Canis lupus familiaris) and gray wolves (Canis lupus). AMB Express, 8(1).
McCauley, S., Clark, S., Quest, B., Streeter, R. and Oxford, E., 2020. Review of canine dilated cardiomyopathy in the wake of diet-associated concerns. Journal of Animal Science, 98(6).
Meeker, D., 2006. Essential Rendering. [online] Available at: <> [Accessed 18 October 2021].
Rankovic, A., Adolphe, J. and Verbrugghe, A., 2019. Role of carbohydrates in the health of dogs. Journal of the American Veterinary Medical Association, 255(5), pp.546-554.
Walker, A., DeFrancesco, T., Bonagura, J., Keene, B., Meurs, K., Tou, S., Kurtz, K., Aona, B., Barron, L., McManamey, A., Robertson, J. and Adin, D., 2021. Association of diet with clinical outcomes in dogs with dilated cardiomyopathy and congestive heart failure. Journal of Veterinary Cardiology,.