Matt
Fred
Greg
Julie
Yup'ik (as 'Caleb')
Rick
Matt's Dad
Announcer
Matt's Mom (as Cat Lofgren)
Young Matt
Matt's Sister
Dave
William / Dog Owner 1
Sampson (as GCH CH 'True North's Buckaroo Bonzai' WWPD)
Gladys / Dog Owner 2
Vet (as Dr. Trevor McCormick)
Vet Assistant
Trucker 1
Trucker 2 / AA Meeting Leader
Weightpull Supervisor (as Melanie Wendt)
Weightpull Clerk (as Aubrie Huston)
Weightpull Hand (as Anthony "AJ" Cleveland)
Murdoch's Stockman
Townie Crew Leader
Denise, Hospice Nurse (as Ellie Phillips)
Drew
Stephanie
Waitress (as Jinny Story)
Hutch Couple #1
Hutch Couple #2
Matt's Brother in Law
Matt's Nephew
Basil (as 'Yup'ik')
Dog 1 (as 'Tank')
Dog 1 (as 'Scout')
Dog 2 (as 'Chloe')
Dog Owner 2
Dog 2 (as 'Sasha')
Dog Owner 3
Dog 3 (as GCH CH 'True North's Buckaroo Bonzai' Rom WWPDA aka Joyful)
Dog 3 (as GCH 'Red Rock's Ruler of Mars' aka Mars)
Dog Owner 4
Dog 4 (as 'Lunatic' aka Luna)
Dog Owner 8
Dog 8 (as 'Rocky')
Dog 8 (as 'Brody')
Dog Owner 9
Dog 9 (as 'Everest')
Dog 9 (as 'Halo')
Dog Owner 10
Dog 10 (as 'Fillin')
Dog 10 (as 'Skunk')
Dog 10 (as 'Tonks')
Dog Owner 11
Dog 11 (as 'Tucker')
Murdoch's Customer (uncredited)