Kyle Massey
Calvin Wheeler
Kay Panabaker
Emily Watson
Mitchel Musso
Raymond Figg
Carter Jenkins
Preston Price
Mark Christopher Lawrence
Calvin's Dad
Alesandra Durham
Kate
Judith Moreland
Calvin's Mom
I
Ibrahim Abdel-Baaith
Rondel
Yolanda Stange
Rondel's Mother
S
Sierra Squires
Young Girl
B
Ben Hammond
Boy
C
Cameron Jones
Dishwasher
Cory McMillan
A.C. Officer #1
M
Magarin Lee Hobson
Leonard
E
Emmit Cannon
Thrash
E
Eric Deng
Miles
K
Kelly Coombs
Julie
S
Sean Sekino
Simon
Dan Larsen
Mr. Dudley
K
Kelly Stevens
Billy
J
Janice Knickrehm
School Librarian
Joel Bishop
Chuck
Heather Beers
Holly
R
Reb Fleming
Dog Show Official
T
Teri Cowan
Head Judge
J
Jansen Davis
Older Reporter
K
Kelly Chapman
Young Reporter
M
Michael Todd Behrens
Father
Chester the Chihuahua
Chester (uncredited)