Thank you. I would not send him alone, but would be by him the entire training. Like I stated before, we never had an issue till now. The last time our girl was in cycle, nothing...that is why we thought maybe he was ill, but showing no signs or symptoms. We are going to have him fixed, we were trying for one litter with our female (she is a medical alert pup for our daughter's sz disorder) as we wanted a back up for her. We originally got the male for that purpose, but he was unable to detect them and preferred protection duty.