1. NRC. Nutrient Requirements of Dogs and Cats. (National Academy Press, 2006).
2. PFMA. Pet Food Manufacturers Association, 2016.
3. Grocer, T. Focus on PetCare, 2010.
4. FEDIAF. Nutritional Guidelines For Complete and Complementary Pet Food for Cats and Dogs. (European Pet Food Industry Federation, 2013).
5. Gagne, J. W., Wakshlag, J. J., Center, S. A., Rutzke, M. A. & Glahn, R. P. Evaluation of calcium, phosphorus, and selected trace mineral status in commercially available dry foods formulated for dogs. J Am Vet Med Assoc 243, 658–666, https://doi.org/10.2460/javma.243.5.658 (2013).