Hello. My dog was sleeping, I went out of the room for 2 minutes, came back in and found a very naughty dog finishing a box of chocolates. I know he LOVES chocolates, but he's only sneaked a couple before I've found him. Now he's eaten 3/4 of the sea shells. He's a pug/jack Russell, on a diet(!). He did it maybe 1/2 an hour ago. No signs of poisoning yet. Is that a good sign? Should I stay awake tonight just in case?