I have a neighbor that stops down once in awhile that has a loud truck and he normally brings his blue heeler "Bailey" with him. (He keeps Bailey in the truck) but my dogs know that she is in there. I have told him that my dogs dont like Bailey. Bailey is a nice dog but was dog aggressive to Meb when he was young and I walked him by the neighbors house. She normally just stays low in the cab of the truck. Now my neighbor likes his dogs but not so much mine. I think he is terrified of Meb and pays no attention to Meb even if Meb goes up to him tail waggin. His truck is loud and now Meb bites at his tires when he goes to leave when Bailey is with him. Now on to the UPS driver. He also is scared of Meb and wont get out of his truck if Meb is out. Well yesterday the dogs were outside when UPS pulled in and his truck is loud and the dogs circled his truck and he just handed me the package and left and Meb chased the truck out the driveway biting at the tires. I yelled at him and tried to get him to stop but he wouldnt and since the dogs can only go to the driveway (invisible fence) they stopped and came back to me. (Shay also chasing the truck) urgh..... I was so upset that they did this and I made them come to me and sit and stay but I guess it was too late. Meb can look pretty intimidating cause the hair will stand up on his back, but actually he is harmless. I think he gets nervous or scared when he senses certain people do. A few days ago the dogs met my nephew for the first time and he is 18 yrs old and the dogs just ran out and greeted him, no problem. Also my other nephew (25 yrs old & hasnt been over in a yr) stopped over with hunting clothes on and face painted and walked right in as Meb was barking and no problem?? Any Suggestions