found: Donaldson, Sue. Zoopolis: a political theory of animal rights, 2013:title page (Sue Donaldson) back cover (Sue Donaldson is an independent researcher and author)
found: Cliffe, Susan. Thread of deceit, c2004:title page (Susan Cliffe)
found: Writers' Union of Canada web site, August 1, 2013:writers/members (Sue Donaldson (a.k.a. Susan Cliffe) is an independent researcher and author; she was born in Ottawa in 1962, and has lived most of her life in Eastern Ontario; studied at Queen's (B.A. Hon), University of Toronto (B. Ed) and Carleton University (M.A.); lives in Kingston with her spouse, Will Kymlicka; publications: Thread of deceit (Susan Cliffe), Sumach Press, 2004; Foods that don't bite back (Sue Donaldson), Whitcap Books, 2003; Zoopolis: a political theory of animal rights (with Will Kymlicka), Oxford University Press, 2011)
found: Scholastic.com, August 1, 2013(Susan Cliffe (pen name for Sue Donaldson); lives just outside the village of Perth Road, north of Kingston, Ontario; Thread of deceit is her first book for young adults)