My 9 month old canine good citizen trained lab is suddenly destroying things when I’m at work! She is not even alone. She is in a climate controlled room in my house with windows and a dog door to the outside and she’s with other dogs that she has been with since she was a puppy. My house cleaner who comes every week was there when she began chewing on the walls and window sills! Nothing has changed about this routine since she was a pup except she’s been out of a crate since she was trained to potty outside. I’m at a loss! I could re crate her or get a muzzle. She’d hate the muzzle but would still have freedom to go outside. Any ideas??? Why is this happening?
She may be in her "teenage" phase! Some Labs regress in behaviours or training quite a bit when they hit this point in their growing up. You can take a few steps back and reinforce her alone time training.
The back molars come through about this time and it can lead to renewed chewing urges. The best thing is to crate her with lots of chew toys until it is passed, being sure she gets to come out often enough for stimulating 'events' and isn't just being crated all day... You might also want to think about her mental and physical stimulation, since a lack of both or either is often behind unwanted destructive behaviours like this.
