Assertion: shepherd's dog | /r/HasProperty | the rise of rin tin tin
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text: While the German Shepherd Dog was considered a great police and war dog, loyal, somber, and fast, the rise of Rin Tin Tin in TV shows and movies brought about the theme of a “boy and his dog” for many Americans — a motif that has followed dogs in the movies and in real life, as any dog owner can attest.