Originally posted by Kfamr
Not if the dog knows better.
I've had Simba for years, ever since he was 8 months old. He'll be turning 6 this Christmas.

He's never had chews unsupervised, and he's never torn up any of our furniture.
That depends on the dog as well. Some chew until they die. My co-worker's newf/lab/fill in the blank dog, Sidney, is 9 years old and has never gotten over the urge to chew. If not for leaving chews out with him her house would be destroyed.

I've had Emily since she was 12 weeks old, and she's never chewed anything inappropriately. I got Clipse when he was 7 months old, and aside from shredding some paper and chewing a hole in the wall once, he wasn't really destructive, and is completely trustworthy now.

Here's a pic of Sidney.