Hey, @adechina.
Well, the name is actually spelled Opossum, and they are animals that can look like huge rats. Their coloring can be different, gray or black and white. We have quite a few of them, along with nutria, which is a similar animal, running around here, but usually you don't see them unless they get ran over (which happens), or your out and about at night. They are kind of similar to raccoons, too, just not as friendly looking.