"It is known..." Really? or is it an urban myth, so to speak. Whenever I read of someone that is missing a ring from the safe or whatever, it makes me wonder. Recently, we went wilderness camping and canoeing. A few things seemed to mysteriously disappear, like the little bag of tent pegs. We assumed that a squirrel had run off with them. Once home, we found them in the large seal-line bag the tent gear was in. We got a big chuckle out of that and decided that from now on, when we have misplaced or lost something (in our premature senility), we'll just say "a squirrel must have taken it!"