Why do dogs have floppy ears?

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Have you ever wondered why some dogs have floppy ears, but wolves don't? This video by NPR's Skunk Bear illustrates the evolutionary process that may explain why certain domesticated animals look and act differently than their untamed counterparts.


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This paper lays out the Neural Crest Cell hypothesis: http://www.genetics.org/content/197/3...
This paper critiques the NCC hypothesis and raises some questions:
http://rsos.royalsocietypublishing.or...

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