
My first Leo trashed the house when young.
She would often re-organise the lounge(2 sofas, coffeetable, and 2 x 1 seaters)... Luckily she didn't really eat the furniture, just little chewing but relating to things she destroyed around the house, the lounge furniture just had little marks and we think these came from moving the furniture not trying to eat it.
So we often came home to a sofa in the hallway and everything moved about a little in the lounge.
She would also pee when left alone so there definately was some separation anxiety there, left for 5 minutes was enough...
However she never whined or barked, just made herself busy.
She would also check all kitchen cupboards and take what ever she felt she would fancy...
sometimes she ate it, sometimes just spread it all around the house (e.g. bag of potatoes, pasta, plastic utensils etc)
When Childlock was used, she pulled the doors off their hinges to get in so we soon stopped using childlocks.
Obviously everything edable was moved to the top cupboards, but she did check the bottom shelves of the top cupboards too!!
We knew what she had "checked" as she did not close the doors afterwards

...
She got herself stuck in our utility room by closing the door after herself... She tried to get out through the door and as that did not work she pulled wooden panels off the wall, obviously her thinking was to go through next to the door as the door was so hard!
She did grow out of all of her habits and never destroyed anything again after she grew a brain (she must have been about 1.5 years old)
She was very clever dog and one of the kind, said in a positive way!