mocha does it. she does with treats too. she's been staying with my bf for the past month because i went on vacation and he has a 98 lb golden lab. everytime she goes and hides her kibble and treats (digging and covering!), he waits until she leaves, goes and finds it and eats it. she comes back a couple of minutes later to find her hidden kibble and treats and finds that it's gone. she then..gets mad and starts barking at mickey (his golden lab), who just stares at her, not guilty at all.
this happens multiple times throughout the day. it's hilarious to watch.