Hi I'm Ashley and I chose to foster a sweet 11 year old Yorkie after my Doctors told me I desperately needed a PSA. He is so sweet 99.9% of the time. Then he turns Cujo and bites me or tries to attack me. He was with the same woman from 7 wks old until 5 months ago. His owner had to go into a home and we both seemed to need each other in a strange way that is unexplained from the moment I saw him. His only way he communicates is with a growl. It is sometimes under his breathe which is go outside, others it is to play. I don't know what to do about the attacking and biting. He only does it to me and not my husband. I feel scared a lot of the time to do certain things. Please help.