I had that happen to me today. On one of Teddys walks with my wife, they were passing the parsonage of our church .Pastor Bill said hi to Teddy and Teddy knows if that happens he is allowed to visit (Teddy loves Pastor Bill and his wife) One of our Church members was also on the porch with them. She had lost her husband this week. When Teddy came up on porch, He went straight to her, put his paws on her knees and head in her lap and stayed quiet while the lady petted him and talked to the Pastor. My wife said after about 5 or 6 mins he got down and greeted everyone else then laid down till my wife was done. I was really surprised and proud of our boy after my wife told me what happened. I realize that he knows when I feel good and bad and comforts me but he never met this lady and my wife said she looked fine. Just proved to me how smart Shelties are.