The smartest, best-trained breeds are similar to a 2-year-old child in
their ability to understand human speech, according to researcher
Stanley Coren, PhD. These dogs understand up to 250 words, while the
average dog can understand 150 words.
Top Dog: Border collie, poodle, German shepherd, golden retriever, Doberman pincher
Beauty Before Brains: Borzoi, chow chow, bull dog, basenji, Afghan hound.
