Karen Halligan

Herself - Chief Veterinarian

Joey Villani

Himself - Dog Grooming Expert

Cherise Clement

Herself - Resident, Small Animal Studies

Tyson Kilmer

Himself - Dog Trainer

Andrea Arden

Herself - Dog Trainer

Nicholas Dodman

Himself - Veterinary Behavioralist

Kevin Draine

Himself - Narrator

Zak George

Himself - Dog Trainer