I have just bought a new patterdale terrier, he is 11months old from working lines and is a cracking dog. I have kept and worked patterdales before but have always stuck to Bitches. In my kennels I currently have one black lab bitch and one alsation bitch. now the alsation is not such a problem as she has been speyed and is kenneled separately, the problem comes in with the young black lab and the pat. I have not had her speyed as it is my intention to breed from her this summer, and introducing a male into the equation has not created too much of a problem for her, but my concerns are that wh