Great expression on the dogs face although he looks sad..

I don't know anything about the circumstances in which this was taken, but it looks as if you disturbed him while he was working - and that's not a good thing if we was meant to be watching the traffic.

The blur is too obvious here.

nice DOF, but other than that...

Aww, he looks sad. Not keen on the blurry image with just his head being sharp, it looks a little odd to me.

I don't like (what looks fake to me) the sharpening effect. But it's a great and noble subject.