1) AKC rejects 2) Alley biters 3) Canine crossbreeds 4) Certain canines 5) Contemptible cads 6) Contemptible fellows 7) Contemptible ones 8) Contemptible sorts 9) Cowardly cads 10) Cowardly canines 11) Cowardly types 12) Despicable ones 13) Dogs needing a home 14) Growlers 15) Heels 16) Junkyard dogs