Hello All. I have a 3 year old female German Shepherd named Ruby. She has always love being centre of attention and loved being petted by anyone who showed any interest. When anyone in the street who looked at her, she dragged me towards them looking for attention. Any strangers coming in to the house, she welcomed them by jumping on them and licking them. In the past few weeks she has done a complete U turn. If anyone comes near her to pet her, she shies away like a nervous puppy and will not let anyone pet her. She has never been out of my sight, so no one could have harmed her to make her be like this. The sudden change in behaviour and fear of strangers concerns me. Otherwise she is happy and content at home. Has any one experienced this sudden change. Best wishes.