I once had a boxer that ate a dish full of Hersey's kisses when were away from home. We returned to little scraps of foil all over the floor, and a guilty looking dog. She never showed a problems from it, though. Lucky, I guess.
Years ago I had a toy silver poodle (she eventually died of old age and heart problems).
She wasn't really a dog, she was a baby, and I treated her like one.
Anyway, she loved to go bye bye, and everytime we'd pick up the car keys she'd get all excited.
When I'd go in the grocery store store or something and leave her in the car, she'd get mad and go through my purse if I left it in the car. She'd find Klennexes and shred them, and once chewed up an entire pack of gum.