Elizabeth Marshall Thomas is an American anthropologist and author, the daughter of anthropologist Lorna Marshall. Amongst other works and novels, she wrote The Hidden Life of Deer, The Harmless People, Warrior Herdsmen, The Hidden Life of Dogs , The Social Life of Dogs, The Tribe of Tiger: Cats and Their Culture, Certain Poor Shepherds : a Christmas Tale, The Old Way: A Story of the First People, Reindeer Moon and The Animal Wife.