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Study Says Wag of a Tail Means Much More Than a Happy Puppy

Researchers found that dogs can read how another dog feels just from wagging its tail.
02:06 | 11/02/2013

Transcript for Study Says Wag of a Tail Means Much More Than a Happy Puppy

-- out of the tail and a fascinating new study on man's best friend. What turns out -- tail -- means a lot more than just a happy puppy our Sara Haines is here with all the details I've been curious... See More
This transcript has been automatically generated and may not be 100% accurate.
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