The Birth On An Opossum - The opossum is the Western Hemisphere's only marsupial or pouch-bearer. This is the story of the birth and childhood of a litter of opossums, photographed is South Carolina. Six to seven weeks old, the young opossums have reached the size of a mouth. They have left the pouch but still cling to their of a mouth. They have left the pouch but still cling to their mother's back for several weeks, traveling wherever she may go in quest of food. When the mother thinks they ar