Clifford Howard or Clifford the Big Red Dog is the main character of Clifford's Puppy Days and Clifford the Big Red Dog series and movie. He is the 2-year-old pet dog of Emily Elizabeth Howard and best friend of Cleo, T-Bone, and Mac. Being a helpful, outgoing, and friendly dog, Clifford has got his massive size from the amount of love he received from Emily Elizabeth. Cartoon cursor with Clifford the Big Red Dog.