@tsarstepan,
I don't believe a word of this, or do I?
No, I don't. Maybe I will if I learn more.
I did have an irish setter rip a painting. But, y'know, those are not the same, this visitor and a year old puppy.
This reminds me of the pinacoteca in Arezzo, whatever the name of the principle museum. The warning to step away - I'm guessing ten or fifteen feet - was reminiscent of the announcements at LAX, about time for unloading only, blasted to cars pulling up to drop off. But I could see their view to keep people away, just not that blasting voice every x number of seconds. I don't remember the work, a tryptich by someone major. But, maybe the hazzerai is why I don't remember it. It's a conundrum. I just remember the room.