they mainly just throw things at them behind the fence, trash and whatnot. If someone comes out with one on a leash, though I have seen them call the dog or egg them on. I don't really understand, because they are really scared of the dogs...they are always jumping up on mailboxes or cars when mine go out (I have invisible fence). I have to admit I get a little pleasure by letting the dogs out when they are being exceptionally rowdy, but I'm pretty sure my neighbor who parks on the street does not. Lol.