Karen HalliganHerself - Chief Veterinarian Joey VillaniHimself - Dog Grooming Expert Cherise ClementHerself - Resident, Small Animal Studies Nicholas DodmanHimself - Veterinary Behavioralist Kevin DraineHimself - Narrator Zak GeorgeHimself - Dog Trainer Tyson KilmerHimself - Dog Trainer Andrea ArdenHerself - Dog Trainer 