There are 334 species of marsupials in the world. The only living marsupial in North America is the Virginia Opossum. Marsupials carry their young in a pouch to allow them to develop and grow. The opossum can be found in a variety of colors from black to almost white. They have large fleshy ears and a hairless tail. They are mainly nocturnal searching for insects during the night. The consume a large number of ticks.