* Virginia Opossum (Didelphis virginiana): This is the most common opossum in North America. Adult males typically weigh 5-14 pounds, while females are usually smaller at 4-8 pounds.
* Other Opossum Species: There are over 100 opossum species worldwide, and their sizes can vary greatly. Some species are much smaller, while others can reach even larger sizes.
Important Note: Opossums can fluctuate in weight depending on factors like their diet, age, and time of year. For instance, they may gain weight in the fall before hibernation.