Peter Singer , "Taking Life: Humans," excerpt from Practical Ethics, 2nd ed. (Cambridge : Cambridge University Press, 1993 ), 175-217, http://www.utilitarian.net/singer/by/1993----.htm; Peter Singer, "Animal Liberation at 30,"New York Review of Books50, no. 8(May 2003).
2.
J. Baird Callicott, "The Conceptual Foundations of the Land Ethic," in Environmental Philosophy: From Animal Rights to Radical Ecology, ed. Michael Zimmerman, J. Baird Callicott, John Clark, Karen J. Warren , and Irene J.Klaver ( Englewood, NJ: Prentice Hall, 1993 ).
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Daniel Engster , "Care Ethics and Animal Welfare,"Journal of Social Philosophy37, no. 4 (2006): 521-36.
4.
Valerie Plumwood , "Human Vulnerability and the Experience of Being Prey,"Quadrant (March 1995): 29-34; Valerie Plumwood, Environmental Culture: The Ecological Crisis of Reason (London: Routledge, 2002), 157.
5.
Josephine Donovan and Carol J. Adams, Beyond Animal Rights: A Feminist Caring Ethic for the Treatment of Animals (New York: Continuum Books, 1996); Josephine Donovan and Carol J. Adams, The Feminist Care Tradition in Animal Ethics: A Reader (New York: Columbia University Press, 2007), 13.
6.
Martha Nussbaum, "Capabilities and Disabilities" (Paper presented at the conference Cognitive Disability: A Challenge to Moral Philosophy, Stony Brook University), Podcast: http://www.stonybrook.edu/sb/cdconference/podcasts.shtml2008.
