A brave dog chased a bear away from his owner's home. North Haverhill, New Hampshire, man identified only as "Zach" found on his Ring doorbell camera a video of his dog chasing away a black bear. Thor, Zachs 13-year-old dog, was standing next to a bear on his front porch, barking wildly at the animal. Thor started chasing the bear, keeping at a safe distance until it was off the property. The homeowner then opens the door and can be heard saying, "Good boy, Thor."