A 200-pound black bear was about to clamp down on 55-year-old Tom Tilley's neck, until his dog, Sam, stepped in--which was a very nice thing to do. So when the bruin grabbed the pooch in its teeth, the Waterloo, Ontario, man figured that one good turn deserves another. "Love is a very powerful emotion, and my thought right away was, 'You're not going to kill my dog,' " Tilley told the Canadian Press. "By . . . distracting the bear from me, it gave me the quick opportunity I needed to run around to the back of the bear, get on its back and with my knife start stabbing it."