I read that Boxers have the longer puppyhood going until they are 3 years old. Does this mean that I should not expect so so much out of Baz as far as behavior goes, he'll be very well behaved and then do something naughty and I don't know where it comes from. He'll even look at us before he does something naughty and then do and do it. I mean it's never anything too bad, but it makes me worry. He's either one or two, we rescued him from a shelter so we're not sure, the vet things he's closer to 2. I didn't know if we need to come down on him with an iron fist or kind of let it slide a little until he's older.