Last year, opossums started showing up in our backyard. Two at first, one in each consecutive day, and caught in the same place: they fell into a big garbage can with some leaves inside, and couldn't get out. About a month later, and the exact same thing happened again. All four were larger than joeys but smaller than adults, so they were no doubt siblings from the same litter. One was taken by animal control, one we released in a wooded area, and the other two were taken to the zoo. We were told we were nice to have done it, because some people just kill them. Just recently we sighted another one in our backyard again.
Just felt like sharing.