Need help from someone with with a lot of dog psychology experience. I have a male and female boarder collie that are around 8-9 years old. I need to rescue a mom sharpei and her little puppy. Puppy is about 10 weeks old and not really nursing. These dogs were abandoned and we have been feeding them at another location. We have just gained the trust of the mother and she is getting very comfortable around us but this has taken a couple of weeks. What is the safest way to introduce them to my two dogs. I am concerned about the mother being over protective with the puppy.