(Sarah of the Clue Crew reports from an AKC dog show with a new puppy friend.)  According to the American Kennel Club, only the offspring of a sire and a dam of the same unmixed breed qualifies as this
[DOC] [TLE] Cmulex.0.6 - Carnegie Mellon School of Computer Science [PAR] ... ACCOR ACCOR'S ACCORD ACCORD'S ACCORDANCE ACCORDED 
ACCORDING .... AKBAR AKBAR(2) AKC AKE AKEBONO AKEL AKELLA AKEN 
AKENS AKER .... AMERI AMERIBANC AMERICA AMERICA'S AMERICAN 
AMERICAN'S ......