Iv never owned a lined bred lurcher. But do have a lined bred terrier and thank feck iv no intention of breeding her or id have to go back to the breeder for there permission and there say in wat stud to use , so poxon is right about what he says bout line breeding , if i was to knock out a litter it would only to be for a pup for my own use and the type i would want that suits me , thats where the line would start n finish if there was any surplus it wouldnt bother me one bit if they just went to pet homes as i would have done what id set out to do ? But makeing money seems the priority t