Michiko Kakutani of The New York Times gives it a bumpy review. But Amazon says:
"At its heart, Rin Tin Tin is a poignant exploration of the enduring bond between humans and animals. But it is also a richly textured history of twentieth-century entertainment and entrepreneurship and the changing role of dogs in the American family and society. Almost ten years in the making, Susan Orlean's first original book since The Orchid Thief is a tour de force of history, human interest, and masterful storytelling—the ultimate must—read for anyone who loves great dogs or great yarns."
Sounds like my kind of book. Read more about it and order it here.