We received this email from Caroline, co-operator (with me) of the Maple Leaf Dog Oasis: 
“Dear dogs of Maple Leaf,
“The Dog Oasis is sustaining nightly raccoon attacks and its operators have decided to bring in the treat jar at night for the foreseeable future to discourage the thieving varmints. Sorry!”
We appear to have successfully trained a family of raccoons to operate screw-on lids.
One friend has suggested we put an alphanumeric combination lock on the treat jar, post the combination on the oasis, and see how many weeks it takes the raccoons to learn to read.
Won’t work. They blackmail people to open it for them: “Nice garden ya got dere. Too bad if sumthin’ was ta… HAPPEN to it…”
We are training them to be literate now? Just so long as the squirrels don’t catch on… 😀
funny…..