Right about now is the destruction stage! Chase was almost perfect so I let him have run of the house at 6 mos. One night he ate my wallet and it's contents. The next night he took the Christmas tree down and chewed off all the lights and chewed up about half the tree.
A few weeks later all chewing behavior ceased. He is now a bit over 2 years old and I can leave him all day (dark to dark) and he won't do anything wrong.
Killer boat dog too. His only fault in the boat is a bit of whining when we cast floats since he wants to retrieve it. He is strange for a lab though and goes on and off the feed. Last lab once ate 20lb's of food after getting into the pantry. She was in obvious pain but looked very happy laying there with what looked like a basketball in her gut.
This is my third lab. They all have very different personalities.