"Old Douglas" was a domesticated camel. He has a marker at Cedar Hill Cemetery in Vicksburg. Heres a link to Old Douglas' Find A Grave Memorial which includes a picture (of the marker not the camel.) http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=13890400
A stick insect. They kept losing him during the battles, but they could always find another one.
Edit - Your answer is incorrect, though the 43rd Mississippi might have appreciated the suggestion. Would have been a lot easier to take care of than a camel.