Another of MGM's Wallace Beery-Jackie Cooper assault on the tear ducts, O'Shaugnessy's Boy casts Beery as oafish but lovable circus animal trainer Windy O'Shaughnessy. Believing himself happily married to acrobat Martha (Sara Haden), Windy is shocked to discover that Martha has walked out on him with their young son Stubby (Jackie Cooper). Conditioned by his nasty mother and nastier aunt (Leora Maricle) to think that Windy is a no-good, Stubby grows up despising his father, who has been reduced to a mere circus roustabout. Windy's comeback with a brand-new animal act coincides with his lachrymose reconciliation with his beloved so -- but not before one of those nick-of-time rescue scenes so beloved by MGM's scenario department. Cast as "Stubby as a Child" is Spanky McFarland, who like Jackie Cooper was a member of Hal Roach's Our Gang Kids.