Books exploring animal rights, speciesism, oppression, liberation, cognition, and our complex relationship with our fellow earthlings. Several titles explore/understand the interconnectedness of all oppression and could equally appear on lists about patriarchy, white supremacy, social justice, environmental justice, etc..
Note! I have not read all of these titles yet - appearance on list does not equal endorsement. I would love to hear your recommendations, please feel free to suggest a book!