Right then so last night we added Marty - A Tri Colour Cavalier to our ranks and we got some teething problems. Fido our eldest Cav has been amazing with him like he as when we had Rusty as a pup. Rusty is the problem. Rusty has always yapped and since we added Marty he is doing it even more but aimed towards him. But the strange thing is Rusty seems as though he is scared of him by keep backing away and barking and not looking at him. Rusty has made 2 very minor attempts to nip him but hasnt done it yet. Any advice on what we could do as we are in love with Marty so bad. We are thinking of phoning a local Dog Behaviorist to help.