One man has gotten a dog to do something that many felt was impossible. A psychology professor was interested in finding out how many words a dog could learn. And Chaser the Border Collie turned out to be the perfect student.

It took three years of intensive training, but this intelligent pooch has learned 1,022 words! This has even opened up her mind to using highly complex logic and process of elimination to learn new words. Just watch how she does it in the video below…