- Elizabeth Marshall Thomas, "The Hidden Life of Dogs"
 - Houghton Mifflin | 1993 | ISBN: 0395669588 | 148 pages | PDF | 4 MB
 - The author of The Harmless People and an authority on canine behavior observes the remarkable exploits of her dogs during a thirty-year period, including how they dug themselves a vast underground den. 35,000 first printing.
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The Hidden Life of Dogs
Labels: Animals related