The understudy
The most amusing production of The Wizard of Oz I ever saw was in 2001. Two brief moments occurred when Toto should have been visible on stage, but wasn't. That didn't bother me much - working on-stage with dogs can be difficult - and it didn't affect the show.

Backstage, the cast in a quandary. The irritable Scottish Terrier was biting everyone in sight; particularly Dorothy. Something had to be done.

At the end of the show, Toto reappeared. Except this time, Toto was a dazed-looking Dachsund/Chihuahua cross hastily seized from someone's back yard. Only in Oz!
(Perv With A Dog had his eyes pecked out by scrub jays on, Fri 7 Dec 2012, 18:04, Reply)