Matthew Modine

Thomas P. Johnson / Voice of Fluke

Acting

Nancy Travis

Carol Johnson

Acting

Eric Stoltz

Jeff Newman

Acting

Max Pomeranc

Brian Johnson

Acting

Ron Perlman

Sylvester

Acting

Jon Polito

Boss

Acting

Bill Cobbs

Bert

Acting

Federico Pacifici

Prof. Santini

Acting

Clarinda Ross

Jane, Tom's Secretary

Acting

Adrian Roberts

Night Guard

Acting

Bart Hansard

Day Guard

Acting

Deborah Hobart

Dogpound Vet

Acting

Libby Whittemore

Libby, the Housekeeper

Acting

Collin Wilcox Paxton

Bella

Acting

Samuel L. Jackson

Rumbo (voice)

Acting

Sam Gifaldi

Young Fluke (voice)

Acting