Thanks for your concern QD, my dog is much better today and the wound is healing well. Just to clarify as I didn't mention this in my original post - the reason I emphasised that my dog was on a lead was because we were walking in a 'dogs on lead only' area of the cemetery. Also, I felt it was important for people to understand that my dog was under my full control at the time of the attack, he had not approached the retriever, tried to play with him or steal his ball/stick etc etc, he was walking along by my side minding his own business when the retriever saw him, ran straight up to him and launched the attack on my dog. The golden retriever is a large heavy set male dog with a big bushy coat and is about 3 times the size of my dog. I am hoping that I will eventually be able to trace the owner.