My dog loves hardtack.
I put on the old 18th-century English sea-gunner's outfit to hand out candy to the annual underage beggars, and discovered a bag of hardtack in one of the pockets. Now, hardtack is nothing more than biscuits of flour and water, with a little salt added, baked to the consistency of a brick. I joked that maybe I should hand it out instead of candy. Then the dog came up and sniffed the bag. And kept sniffing it.
Karen bet me that he wouldn't actually eat a piece. Bzzzzzzt, wrong answer. He gobbled it up like it was candy, then tried to take the bag out of my hand.
That dog is so weird.