Looks like some kind of foxtail for sure, maybe Giant Foxtail. I didn't see it listed in your profile, what part of the woods are you from exactly? As far as from a habitat standpoint, our western WI bucks love to bed in patches of foxtail that are growing in standing cornfields. Other than that, I have never witnessed any browsing pressure by deer. Bad for your dogs, the tiny seeds have "claws"(for lack of a better word) that will work there way into the pads on their feet and other areas and cause potentially fatal infections.