A biddable dog wants and is eager to please its trainer or companion. The term implies that the dog is more than just easy to train and that it actively tries to please its trainer by doing what it believes the trainer wants it to do. German Shepherds, Border Collies, and Poodles are often described as “biddable.” Not surprisingly, these three dogs are also ranked as the smartest breeds in Stanley Coren‘s book “The Intelligence of Dogs”.