The tracking dogs and bloodhounds are useless..............they should just leave them at home and quit wasting time. I can't tell you the countless searches that have been conducted using those dogs and eventually the missing person was found dead a few hundred feet away from where they were last seen. The dogs never picked up on a scent........ever. Lindsey Piccone is the most recent one that comes to mind, but there are dozens of others, maybe even hundreds of cases like that. I've evolved to the point now where I think the entire concept of tracking dogs is nothing more than an urban myth.
Also, I think they are expanding the search perimeter out way too far. It was dark, it was cold, he was alone, and he was mad.................he didn't go very far. Like many little boys his age, I'll bet he has a favorite hiding place that few people know about with maybe the exception of his brother and some other friends. If this was a campground or a forest, I would be all for the idea of expanding the search out 3 or 4 miles, but this is an urban area with plenty of good hiding places within a couple of blocks from his home.
Another thing, if his house has a fireplace and a chimney, somebody needs to skedaddle their butt up on the roof and take a look down inside of it.