はじめに 文献一覧 1. Beirne, P. (1997). Rethinking bestiality 2. Singer, P. (2001). Heavy petting. 3. Beirne, P. (2001). Peter Singer's``Heavy Petting''and the Politics of Animal Sexual Assault. 4. Levy, N. (2003). What (if anything) is wrong with bestiality?. 5. Milligan, T. (2011). The wrongness of sex wi…