Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Nov 13, 2011
Meet an extraordinary Border collie and other dogs that are changing our view of canine intelligence. Aired February 9, 2011 on PBS. New discoveries are revealing that "man's best friend" is smarter than we ever thought, with a brain that resembles our own in ways we never imagined. Travel to Wolf Park, where scientists are tracing the evolutionary path that turned wild animals into our cuddly companions, and meet a superdog with a vocabulary of over 1,000 words. This brilliant border collie understands 1,022 nouns