YO, DOG!
'(<a href="http://www.j-archive.com/media/2008-04-02_DJ_16.jpg" target="_blank">Jon of the Clue Crew walks the grounds of The Seeing Eye in New Jersey.</a>) The Seeing Eye breeds its own dogs, many of them <a href="http://www.j-archive.com/media/2008-04-02_DJ_16a.jpg" target="_blank">this</a> type of dog, whose original purpose required them to go in a straight line'
a golden retriever (or retriever)