Hi, I have a 10lb terrier, I got done eating a macdonalds Hot fudge sundae and i was all done, there was a little bit of ice cream on the sides as well as some sticky peices of fudge on the side, and my dog got into it and started licking it, he licked it for maybe 25 seconds or so....so should I be worreid? is that enough to make him sick? what should I do?