Two young brothers secretly bring home a seal from their summer vacation and try to hide it from Mom and Dad. Havoc ensues as Sammy's antics disrupt the quiet town of Gatesville and its unsuspecting residents.
as Arthur Loomis
as Petey Loomis
as Harold Sylvester
as Chester 'Chet' Loomis
as Porsche 'Rocky' Sylvester
as Helen Loomis
as Lovey Sylvester
as Mrs. Crotty
as Sue Foster
as Ben
as Party Guest (uncredited)
as Party Guest (uncredited)
as Party Guest (uncredited)
as Party Guest (uncredited)
as Waiter (uncredited)
as Waitress (uncredited)
