After blowing up the picture, I think his nose is too long for a boxer, I honestly think it's a immature red fox. Tough one to tell.
Definetly a fox or coyote... I would lean more towards a young coyote. It has a long snout and its tail is hidden by a branch.... definetly not a boxer!
Looks like some kind of container or feeder to me. I don't know where you guys see a coyote, fox, or dog from a rectangular box.
I'd lean towards a coyote pup, his tail is hidden behind the fallen branch and his snout is fairly long. **edit** After blowing the pic up, you can see the dark areas on the face... I'm changing my vote to Fox.