Bentley is pretty much over the adolescent phase. We actually got him when he was 6 mo. old, and he was pretty well behaved at the time. That being said, we recently got him a little brother (a kitten!) and they play together all the time. Of course, if the cat hides under the table, Bentley has taken a liking to chewing on said table to get out his frustration. Which has made me not so happy! So unfortunately, he's back to staying in the crate when I'm not at work.
Luckily he loves his crate, but I would love for him to relax a bit more around the kitten so that they can play and relax when I'm gone. He's such a herder, though, that his job is never done when the cat is around!