Didelphis
Didelphis is a genus of New World marsupials. The six species in the genus Didelphis, commonly known as large American opossums, are members of the order Didelphimorphia. The genus is composed of cat-sized omnivorous species, which can be recognized by their prehensile tails and their tendency to feign death when cornered. The largest species, the Virginia opossum, is the only marsupial to be found in North America north of Mexico.
