Although only chased a few times there was one dog who came out from his yard as myself and some friends were climbing a hill. We could not out run him so as he approached I just stopped and let him come up to me and bark. The owner came out and got the dog. WE suggested they should secure there pet to keep it safe. The next time by that house we were going downhill, the dog came out at us again. This time we let him follow us for quite some distance. He was pretty far from home and I'm sure the owner had some fun finding him. Pet owners should just keep their dogs secured. Pretty simple.