I guess I'm lucky, mine have never done that-and I leave the bathroom door open. The boxenji did take the toilet paper once from the roll and ran all through the house with it leaving a long trail, but no shredding. Looks like they had a lot of fun though!
Arlene, the Basenji Brats with the Boxenji!(images/smilies/biggrin.png "Big Grin")
I babysat the dog next door one day (shep. cross) and I accidentally left the TP out after a grocery run. Needless to say Tyler introduced his friend to the joys of TP destruction and the neighbors never really forgave me.