I try to discourage Opossums from coming in my yard because my little dog chases them when she goes out to use the bathroom. I'm afraid they won't always "play dead" and may bite her. One used to come to my in-laws house and chase their cat off the porch to eat her food. That thing made the creepiest noise.

PayItForward - I take it you don't have these where you live? They are wild and in abundance around here. They are North America's only marsupial and carry their babies in a pouch. Typically about the size of a cat. Unfortunately they are often victims of cars and probably our state's number one road kill. Most people say their name by dropping off that first O.