The stuff in the Crunchie is puff candy (at least that's what it's called up here).
You can make it at home dead easy, too!
http://www.cutoutandkeep.net/projects/puff_candy_cinder_toffee
Ahhhahaha! Can't believe your dog wouldn't even eat it. Sometimes you get lucky with pork scratchings and get a nipple.
I have no idea where that puts the scores. Somebody figure it out.