I sent this photo of a half eaten tomato to the OSU Master Gardener's hot line to see if they had any ideas about what is having a midnight snack in our garden. So we're down to raccoon, squirrel or fox, since most other varmints cannot get over a 6' fence. Short of camping out by the tomato plants, the only other option is to make sure all ripe and almost ripe fruit are picked each evening before the marauder invades our little piece of heaven.
I guess my motto applies: "When you garden, there's always something!"