Smartest Raccoons Ever

We feed the feral cats on the backyard porch, but because of Walter's penchant for cat food, if there's any left when it's his time to go out in the backyard, I try to outwit him by hiding the food in the garden cart.  This afternoon, I opened the garden cart and saw that I'd forgotten to take the food out of the cart last night.  This is what I saw:

When I lifted the paper plates out of the cart, all the food was gone.  The clever raccoons opened the garden cart and ate all the food, and then closed the cart, so I didn't even know they'd been in there.  I'm telling you, these raccoons are so smart, they should go on Jeopardy!