Opossums are brazen. We had one in our yard when I was a kid and my dad shot near it to scare it off. It just made a mean look and showed its teeth. Never understood why he didn't go ahead and shoot it because it almost bit me. It would come up on the back porch and when I went out to get would, there it was. It happened two or three times. I smacked it off the porch once with a fire log and that didn't faze it. I hope you can take care of it.