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As marsupials, female opossums have a reproductive system that includes a bifurcated vagina and a divided uterus; many have a pouch. [29] The average estrous cycle of the Virginia opossum is about 28 days. [30] Opossums do possess a placenta, [31] but it is short-lived, simple in structure, and, unlike that of placental mammals, not fully ...
The common opossum (Didelphis marsupialis), also called the southern or black-eared opossum [2] or gambá, and sometimes called a possum, is a marsupial species living from the northeast of Mexico to Bolivia (reaching the coast of the South Pacific Ocean to the central coast of Peru), including Trinidad and Tobago and the Windwards in the Caribbean, [2] where it is called manicou. [3]
The common name "four-eyed opossum" comes from the spots above the eyes of this species looking like another set of eyes. The specific name " canus " comes from Latin and means "white" or " hoary ", [ 4 ] in reference to the lighter color of this species.
The nine species in the genus Philander, commonly known as gray and black four-eyed opossums, are members of the order Didelphimorphia. Mature females have a well-developed marsupium . The tail appears to be hairless except for the proximal (closest to the body) 5 or 6 cm, which has a few long hairs.
Gray four-eyed opossums do not have a well defined territory, and home range stability depends on the availability of adequate resources. [4] They are omnivorous, feeding on small animals and vegetation, such as leaves, seeds, and fruits. [5] The gray four-eyed opossum does not "play dead" like the North American Virginia opossum.
A northern four-eyed opossum from Coatzacoalcos, Veracruz, Mexico. These species are relatively light-furred for a Philander, with gray colors throughout the back, neck, base of the tail, and outer side of the limbs. The head can have some gray colors but tends to be darker, closer to black.
The brown four-eyed opossum (Metachirus nudicaudatus) is a pouchless marsupial [3] of the family Didelphidae.It is found in different forested habitats of Central and South America, [2] from Nicaragua to Brazil and northern Argentina, [1] including southeastern Colombia, Paraguay and eastern Peru and Bolivia, at elevations from sea level to 1,500 m (4,900 ft). [2]
The bushy-tailed opossum (Glironia venusta) is an opossum from South America. It was first described by English zoologist Oldfield Thomas in 1912. It is a medium-sized opossum characterized by a large, oval, dark ears, fawn to cinnamon coat with a buff to gray underside, grayish limbs, and a furry tail.