Well, that was unexpected.

I walked out to the mailbox, which is on a rather dark corner of the lot, surrounded by shrubbery. I heard a weird growl from the pathway. Actually, more like a grunt. Kind of like a sarcastic pig. I crouched down to get a better look. It was a group (apparently called a "nursery") of raccoons. They were quite fat and shaggy. One of them stood on its hind legs, and seemed to expect me to dispense Cheetos or scraps of hot dogs. There are lots of rabbits on my property, but I've never seen masked garbage bandits before.