What is the smartest dog in the world?

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The following is a script of "The Smartest Dog in the World" which aired on Oct. 5, 2014. Anderson Cooper is the correspondent. Denise Schrier Cetta, producer. Human beings have lived with dogs for thousands of years. You'd think that after all that time we'd have discovered all there is to know about them. read more

He's a quick study. Dog intelligence, like human intelligence, comes in various forms. read more

Simply Ingenious - 10 Smartest Dog Breeds Top 10 Smartest Dogs in the World We've gathered a wide sample of dog breeds, sharpened their No. 2 pencils (you know, no opposable thumbs), and asked them to fill out a simple intelligence questionnaire. read more