Jack's Tree

I've received many complaints about my lackluster blogging activity. So, I'm playing catch up here and posting much of what I've failed to over the past 2 months.
We had a Jack-sized Christmas tree this year because we were traveling down to San Diego for most of the holidays and we also feared having to keep Jack from attacking the tree. Here's our attempts of taking photos of Jack running around at Half Moon Bay with the tree. I'm not sure what he's trying to communicate to the tree in the second photo.