We thought we were doing well and that Merida could be left on her own for short trips during the day. She'd been fine many times before.
Except we returned from the store to find this:
Poor Gimli's bed in which he sits and enjoys the morning sun now has a hole in the base.
On another occasion, I found her inside the bed.
We now watch her obsessively and ensure she has enough toys with which to chew and play. Now, when we leave, off she goes into the crate.
We'll try her again once she stops teething, as I'm sure that's a big part of this behavior.