Living with Opossums Living with Opossums Opossums are marsupials. This means the female doesn't have a placenta and their young are born after a brief gestation period - about 11 days. For a litter to survive, the mother must carry them in her pouch for at least two months. In her pouch, the babies fasten themselves to a nipple and hold on for the entire two months. Mating season is from January to October, and it usually peaks from February to June.
Opossums have between two and three litters a year.
Litters average about eight young, but can be as many as 13. Nocturnal, the opossum looks for food at night. These critters will eat just about anything. They are found on farmlands and woodlands, but have slowly migrated into more urban communities. They are quite common in any city block.