That's the shredded remains of the first few pages. I'm on the fifth day of leaving my dog alone, out of her crate, for a full shift while I'm at work. When I got home tonight, I discovered that she extracted the booklet and gave it some good chewing attention while I was gone.
I found the rest of the booklet upstairs and relatively intact; she apparently carried it up there at some point during the evening.
I don't consider this a major breach of rules on the dog's part, so she gets a passing grade for the night. The only major incident so far was on the first day, when she pulled a Ziploc bag of dog food off the kitchen counter (I had forgotten it was there), tore into it and ate it while I was at work. Aside from that, I've discovered a few things (a boot, a glove) moved around to different parts of the house, but nothing - other than the Jehovah's Witnesses booklet - destroyed.
If they come back, I guess I can legitimately say, "My dog ate it."