Chaser has a way with words. She knows over a thousand of them -- more than any other animal of any species except humans. And she and her owner/trainer, retired psychologist John Pilley, have now demonstrated her ability to understand sentences with multiple elements of grammar and to learn new behaviors by imitation. John's work with Chaser offers a fresh perspective on what's possible in the relationship between a dog and a human.

Chaser knows over a thousand words, more than any other animal of any species except humans. She and her owner and trainer, retired psychologist John Pilley, have also demonstrated her ability to understand sentences with multiple elements of grammar.