In 1983, Sapontzis founded, with his wife, the Hayward Friends of Animals Humane society.[7] They now operate Second Chance, Helping the Pets of People in the Need, in California.[7] Sapontzis was also one of the first members of the board of directors of the Society for the Study of Ethics and Animals.[1]
Sapontzis has authored numerous papers,[8] as well as two books: Morals, Reason, and Animals (1987)[9] and Subjective Morals (2011).[10] He also edited the book Food for Thought: The Debate over Eating Meat (2004).[11]
Sapontzis, S. F. (1977). "Direct Perception, Some Further Comments". Philosophy and Phenomenological Research. 37 (4): 556–565. doi:10.2307/2106436. ISSN0031-8205. JSTOR2106436.
Sapontzis, S. F. (1978). "A Note on Merleau-Ponty's "Ambiguity"". Philosophy and Phenomenological Research. 38 (4): 538–543. doi:10.2307/2106575. ISSN0031-8205. JSTOR2106575.
Sapontzis, S. F. (1980). "Are Animals Moral Beings?". American Philosophical Quarterly. 17 (1): 45–52. ISSN0003-0481. JSTOR20009783.
Sapontzis, Steve F. (1985). "Moral Community and Animal Rights". American Philosophical Quarterly. 22 (3): 251–257. ISSN0003-0481. JSTOR20014103.
Sapontzis, S. F. (1987). "Moral Relativism: A Causal Interpretation and Defense". American Philosophical Quarterly. 24 (4): 329–337. ISSN0003-0481. JSTOR20014210.
Sapontzis, Steve F. (1990). "Groundwork for a Subjective Theory of Ethics". American Philosophical Quarterly. 27 (1): 27–38. ISSN0003-0481. JSTOR20014309.