“60 Minutes” interviews the smartest dog in the world with a 1,000-word vocabulary

A Border Collie named Chaser became famous as the “smartest dog in the world.”

Her owner is an 86-year-old retired Psychology professor, John Pilley. John treats her like a child and their bond is so strong.

John had been teaching Chaser since she was a little puppy and at the age of 2 Chaser knew more words than a human 2-year-old toddler.

John taught her more than 1000 names of toys. They practiced 5 days a week for 5 hours per day.

John cataloged all the toys and then gave Chaser 100s of tests for three years. But the dog knew not only the names of the toys but also the difference between nouns and verbs. He called an interviewer to make the whole world know about his clever dog.

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