Untrained dogs that are neglected & bored are often ripe for a bit of befriending. Just a matter of finding out what they like, special treats, live rabbits, the right smell etc.
All but one was thrilled just to have someone pet them. The one was very timid and wouldn't come near us. The neighbors on the other side have a dog that is left outside a lot and he will bark until I go up to the fence and pet him. He tries to use your arm as a chew toy but he's a good dog. I don't understand why people get a dog just to leave them outside all the time.