He's adorable! I don't own a lhasa apso but everyone Ive met has been really cute and charming. Many dogs get startled while asleep, i think that sounds very natural what he does. things happen to rescue pets, some of them really horrible and they can't tell us. Sometimes those quirks fade away when they feel completely safe and secure and that no harm will come to them. best wishes for a wonderful life with Charley!