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National Geographic looks at dogs and investigates how humans have taken an active role in shaping their appearance and behavior through selective breeding. (oficjalny tekst dystrybutora)
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Photo © National Geographic Channel
![Science of Dogs - Z filmu](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/000/448/448196_0af0aa.jpg)
National Geographic looks at dogs and investigates how humans have taken an active role in shaping their appearance and behavior through selective breeding. (oficjalny tekst dystrybutora)
Photo © National Geographic Channel