Her owner John Pilley is a retired psychology professor who has been teaching Chaser new words since 2004, when she was just a puppy. Together they have appeared on countless television broadcasts, on the news, radio, and in countless articles across the internet.
She even understands categories of words (ie. she learned that "toy" refers to all the objects she was allowed to play with, "ball" refers to round bouncy objects, and "frisbees" as any kind of round, flat toys.)
John Pilley has been recording his research findings about Chaser and even wrote a book about Chaser and their training experiences together. Everything Chaser has learned has been through praise and play, especially with her favorite toy, a little blue raquet ball. Although Chaser has been Pilley's research partner since she was 2 months old, she is first and foremost a beloved member of the family.
For more information about Chaser, you can check out her website, ChaserTheBorderCollie.com, or follow her on Chaser's official YouTube channel, Facebook page, or on Instagram. You can also pick up a copy of her book, Chaser: Unlocking the Genius of the Dog Who Knows a Thousand Words on Amazon.