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Nature | Episode | Dogs That Changed the World: Dogs By Design

The second hour of "Dogs That Changed the World" details the explosion of the basic working dog types into the roughly 400 breeds known today; explores concerns about today’s competitive breeding and its effect on dogs’ health and well-being; and outlines dogs’ potential role in medical care for human beings.

S25 E12 | 0:52:58 | AIRED: 10/12/2011 | EXPIRES: 12/31/2022 |
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