Genus Didelphis is a scientific term that refers to a group of animals known as opossums. These unique mammals are native to the Americas and are characterized by their long, pointed snouts and hairless tails that can grasp objects. Other synonyms for Genus Didelphis include Didelphis, opossums, and American marsupials. There are around 100 different species of opossums, ranging in size from the tiny mouse opossum to the larger Virginia opossum. These animals are known for their adaptation skills, being able to thrive in a variety of environments, from forests to urban areas. Despite their sometimes fearsome reputation, opossums play an important role in the ecosystems they inhabit and contribute to the overall biodiversity of the region.