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Chaser - The intelligent Border Collie

  • Uploaded by Holy42 on Dec 23, 2013
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Chaser, a female border collie that responds to over over 1,000 words, all proper nouns, during the filming of an episode of NOVA scienceNOW called "How Smart Are Animals?," with host Neil deGrasse Tyson, back left, and Chaser's owner John Pilley, a retired psychologist.



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