I recently heard from a lady who was understandably very concerned about the “aggression” that her normally loving dog displayed toward other people, especially strangers. She was even considering have her dog put down as she had been told that nothing could be done to stop this behaviour.  Her dog would appear to act in an inviting and calm manner, which anyone would interpret as the dog being 'friendly', so they considered that to approach the dog would be appropriate. The dog would even roll onto its back exposing it tummy, indicating a submissive nature. However, sometimes…