A friend of mine had adopted a German Shepard mix for 6 years. One Chrstmas Eve, she was fooling around with her two kids in the kitchen while they were waitig for the holiday roast to cool. They were picking off loose pieces of the roast, taking little intermittent bites- all laughing, giggling, tickling - when suddenly their dog lept into the 8-year-old son's face and attacked him. Bit him so hard in the head and face he needed stitches. Sadly, the dog whom they had loved and trusted for so many years, had to be put down before Santa could fill his doggie stocking.