My friend Denise just sent me this photo, with permission to post. It's her uncle Paul in Vietnam, with his pet monkey.
... One of the photos I found is attached. It is my uncle Paul in Vietnam, with his friend Judy. He claims pets like Judy are not great pets, and they get especially violent when drunk. He did, however, have a duck named, imaginatively, Duck-Duck, that he rescued from the handlebars of a Vietnamese boy's bike, where it was tied, and presumably about to become dinner. He said the duck followed him everywhere, even in the helicopter where it flapped its wings as if to fly (he thinks the wings were damaged in preparation for that dinner, so he never actually flew). Said that duck was the best pet he ever had.
Let this be a lesson to us all: Don't let your monkey get into the liquor cabinet.
(There is a photo of Paul with Duck-Duck here, in the lower left-hand corner.)