mmm my staffy has been responsible for the demise of a Cybook screen through head butting said device whilst my daughter was reading it. Same staff decided my $800 lens made a good chew toy, thankfully the lens survived a little better than the cybook. If I am in bed, my e-reader is safe, if I am on the sofa reading, then she thinks it is fine to jump all over me and try to knock said device from my hand. Just as well thes creatures endear themselves to us in other ways