Synthesized answer
The provided passages do not contain information about what questions remain unanswered in "Fellow Creatures: Our Obligations to the Other Animals." The snippet only describes the book's general theme of presenting a "compelling new view of our moral relationships to the other animals" [Passage 1]. There is no mention of specific unanswered questions within the text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Fellow Creatures by Christine Marion Korsgaard Description: Presents a compelling new view of our moral relationships to the other animals Categories: Nature Pages: 267 Snippet: Presents a compelling new view of our moral relationships to the other animals