Primarily focused on the ancient Greek philosophers, this work offers a survey of the earliest arguments for and against the inclusion of nonhuman animals in human realms of ethical consideration. By following the trends of ancient western thought concerning animal ethics, the influencing factors behind the downfall of the subject in Medieval times, both in terms of discourse and practice, is discovered in the philosophical exchange that preceded medieval thought.
Sias, Joshua J..
"Ancient Animal Ethics: The Earliest Arguments for the Ethical Consideration of Nonhuman Animals."
The Downtown Review.
Available at: http://engagedscholarship.csuohio.edu/tdr/vol2/iss1/4