本文旨在Frey動物倫理的研究，全文將依循Frey從「人與動物之差異」到「人的生命價值高於動物」之動物倫理的研究進路，深入探究Frey證成「人的生命價值高於動物」之關鍵的動物倫理觀點。
Frey的動物倫理，在理論的建構上，以偏好效益主義為基礎，強調人與動物的差異之處，並以「生命的豐富度」作為衡量生命價值之標準，使其主張之「人的生命價值高於動物」的觀點得以證成；在現實的應用上，則是允許肉食及改善後的工廠化農場，甚至為了人類重大的利益，動物實驗也會被允許。此一「反平等」的動物倫理學說，雖非主流，但仍舊提供了一種獨特的動物倫理觀點。

This thesis aims to research on R.G. Frey’s animal ethics. The content is based on his animal ethics, from “the difference between human and animal” to “human’s value of life is higher than that of animal” as the approach in order to sought in-depth on how Frey’s critical argument – “human’s value of life is higher than that of animal” is justified.
Theoretically, Frey’s animal ethics is grounded on preference utilitarianism which empasises the difference between human and animal. He adopts a criterion of “richness in life” to weigh the value of life so as justifying the viewpoint that “human’s value of life is higher than that of animal”. Practically, based on such perspective, carnivore and improved factorial farm will be permissible. Animal research will also be allowed for maximizing utilities for the sake of human. Such “anti-equality” animal ethics, though is not mainstream, provides a unique animal ethics viewpoint.

英文專著：
Bentham, Jeremy, 2007, An Introduction to The Principles of Morals and Legislation, New York: Dover Publications, Inc..

Copp, David, 2011, “Animals, Fundamental Moral Standing, and Speciesism,” in Tom L. Beauchamp and R. G. Frey (eds.), The Oxford Handbook of Animal Ethics, New York: Oxford University Press.

Darwin, Charles, 1989, “Comparison of The Mental Powers of Man and The Lower Animals ,” in (eds.) Tom Regan and Peter Singer, Animal Rights and Human Obligations, 2nd ed., New Jersey: Prentice-Hall, Inc..

Feldman, Fred, 1978, Introductory Ethics, New Jersey: Prentice-Hall.

Frey, R. G., 1980, Interests and Rights: The Case Against Animals, New York: Oxford University Press.

__________, 1983, Rights, Killing, and Suffering: Moral Vegetarianism and Applied Ethics, Oxford: Basil Blackwell Publisher Limited.

__________, 1989, “Why Animals Lack Beliefs and Desires,” ( eds.) ,Tom Regan and Peter Singer, Animal Rights and Human Obligations, 2 nd ed., New Jersey: Prentice-Hall, Inc..

__________, 2005, “Animals and Their Medical Use,” in Andrew I. Cohen and Christopher Heath Wellman (eds.), Contemporary Debates in Applied Ethics, Malden: Blackwell Publishing Ltd..

__________, 2008, “Animals,” in Tom L. Beauchamp (et al.) (eds), Contemporary Issues in Bioethics, 7th ed., Belmont: Wadsworth Publishing.

__________, 2011, “Utilitarianism and Animals,” in Tom L. Beauchamp and R. G. Frey(eds.), The Oxford Handbook of Animal Ethics, New York: Oxford University Press.
Goodpaster, Kenneth E., 2001, “On Being Morally Considerable,” in Michael E. Zimmerman, J. Baird Callicott, George Sessions, Karen J. Warren, and John Clark (eds.), Environmental Philosophy: From Animal Rights to Radical Ecology, 3rd ed.,
New Jersey: Prentice-Hall

Holmes III, Rolston, 1988, Environmental Ethics: Duties to and Values in the Natural World, Philadelphia: Temple University Press.

Johnson, Edward, 1989, “Life, Death, and Animals,” in Tom Regan and Peter Singer (eds.), Animal Rights and Human Obligations, 2 nd ed, New Jersey: Prentice-Hall, Inc..

Mill, John Stuart, 2016, Andrew Bailey (ed.) , Utilitarianism, New York: Broadview Press.

Paton, Sir William, 1989, “A Reply to Frey,” in Tom Regan and Peter Singer (eds.), Animal Rights and Human Obligations 2 nd ed, New Jersey: Prentice-Hall, Inc.,
R. G. Frey, 2008, “Animals,” in Tom L. Beauchamp (et al.) (eds), Contemporary Issues in Bioethics 7th ed., Belmont: Wadsworth Publishing.

Regan, Tom, 2004, The Case for Animal Rights, Los Angeles: University of California Press.

Rowlands, Mark, 2002, Animals like Us, New York: Verso.

Singer, Peter, 1979, Practical Ethics, New York: Cambridge University Press.

_____________, 1993, Practical Ethics (2nd ed.), New York: Cambridge University Press.

_____________, 2002, Animal Liberation, New York: HarperCublishers Inc..

英文期刊：

Frey, R. G., 1987, “Autonomy and The Value of Animal Life,” The Moist, Vol. 70. No.1: 50-63.
__________, 1988, “Moral Standing, the Value of Lives, and Speciesism,” Between the Species, Vol. 4 No.3: 191-201.

__________, 1996, “Response: Autonomy, Animals, and Conceptions of The Good,” Between the Species, Vol.12, No.1: 8-14.

Gruzalski, Bart, 1996, “Reply: The Instrumental Value of Autonomy,” Between the Species Vol. 12, No. 1: 14-18.

Lee, Jack, 2008, “Are All Animals Equal? ”, Studies on Humanities and Ecology in Taiwan, Vol. 10, No. 1: 73-88.

中文專書：

Peter Singer著，孟祥森、錢永祥譯，2011，《動物解放》，台北市：關懷生命協會。

John Stuart Mill著，邱振訓譯，2017，《效益主義》，新北市：暖暖書屋。

中文期刊：

李凱恩，2011，〈Singer動物解放倫理學批判研究〉，《應用倫理評論》，第51期，頁19-34。

學位論文：

王萱茹（研撰），李瑞銓（指導），2013，《論納斯邦(Martha C. Nussbaum)的動物正義論：動物倫理爭議的解決》，中壢：國立中央大學哲研所博士論文。

黃柏青（研撰），李凱恩（指導），2019，《胎兒唐氏症施行人工流產的倫理反省》，中壢：國立中央大學哲研所博士論文。

蕭戎（研撰），張子超（指導），2017，《論人與動物的道德地位》，台北：國立臺灣師範大學環境教育研究所博士論文。