Continuity mistake: Though she and Mark have both been calling Putzi the dachshund (who is visibly female) a "she" and a "good girl" throughout the episode, April has an odd memory lapse later and refers to the dog as "he." (00:29:30)
The Girl From U.N.C.L.E. (1966)
1 continuity mistake in The Dog-Gone Affair - chronological order
Starring: Leo G. Carroll, Stefanie Powers, Noel Harrison
The U.N.C.L.E. Samurai Affair - S1-E27
Revealing mistake: Mark's stunt double in the final fight scene has a very bad (and obvious) brown wig. Mark's hair, however, is blond. (00:44:00)