Border Collie Trained to Recognize 1,022 Nouns Dies - The New York Times
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19 Smartest Dog Breeds Ranked For Intelligence
Farm-Collie
Whisky Knows Her Toys - The New York Times
World's Smartest Dog, Chaser the Border Collie, has died
Chaser, the world's cleverest dog, has died after learning 1,022 words
Border Collie Training and Puppy Training
Your Dog May Be Smart, but She's Not Exceptional - The New York Times
Who Will Win the 'Genius Dog Contest?' Watch the Competition Begin - The New York Times
Is your dog a genius?
Who Will Win the 'Genius Dog Contest?' Watch the Competition Begin - The New York Times
Border Collie: Breed Facts & Temperament
Chaser, 'The world's smartest dog,' dies at 15
Is a rough collie a border collie? - Quora
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