Vegetarian companion animal diets

Knight, A. & Leitsberger, M. (2016). Vegetarian versus meat-based diets for companion animals. Animals 6, 57. 20 pp. (645 kb).

A review of the existing evidence concerning the nutritional soundness of vegetarian and meat-based diets for cats and dogs, and the health status of both groups. Additional information is sourced from the manufacturers of vegetarian companion animal diets. This lengthy article provides the most comprehensive peer-reviewed examination of these topics, as of Sep. 2016.

Knight A. In defense of vegetarian cat food. J Amer Vet Med Assoc 2005; 226(4): 512-513.
Knight A. The author responds. J Amer Vet Med Assoc 2005; 226(7): 1047-1048.
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A debate following the publication of: Gray et al. Nutritional adequacy of two vegan diets for cats. J Amer Vet Med Assoc 2004, 225(11): 1670-1675; in which two commercially-available vegan cat foods were found to be deficient in a range of essential nutrients (see, Vegetarian feline diets, Appendices).

Knight A. Fishy business? Lifescape 2008 (May): 74-76. Parts republished in Vegan Views 2009; 117: 12-13.
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A humorous, thought-provoking examination of the controversial issue of vegan diets for cats and dogs. Includes a discussion of the health hazards and benefits of meat-based and vegan diets, a discussion of natural feeding behaviour, and advice for guardians of vegan animals on safeguarding their health.