Errr... How can they lose their jobs, LH? They're probably all dead.

Of course, the definitive faux pas from the early Tarzan movies was the incessant inclusion of Asian elephants in movies that supposedly took place in Africa. I don't recall ever seeing an elephant scene that used African elephants. Of course, African elephants are supposedly much more difficult to train than their Asian relatives, so there's a logical reason for the substiturion, but they could have used ear prostheses to at least make 'em look African.