June 9, 2014 0 Most Intelligent Dog in the World – Border CollieThis 3 month old Border Collie is so smart you won't believe what he can do!READ MORE 3 Million Dogs, Cute, Dogbookbest animal videos, best Border Collie video, Border Collie, Border Collie video, Most Intelligent Dog in the World, Most Intelligent Dog in the World - Border Collie, Smartest dog in the world