Border collies are known for their intelligence. Chaser is a border collie that belongs to a retired psychology professor. John W. Pilley read about a dog who learned to recognize 200 German nouns, and decided to see if Chaser could learn words as well. Working with the dog for around five hours a day, Chaser learned to recognize the names of a couple of new objects every day, to a current total of 1,022 nouns! Along the way, Chaser got the idea that learning words is her job, so now the 82-year-old Pilley has a hard time taking it easy, as Chaser demands her lessons! Pilley is now teaching Chaser verbs and basic grammar.