Hi everyone, thanks for your advice and kind words - it's much appreciated. However, I'm worried I might have painted a more extreme picture than I intended. I should first give a bit of history about the dog, he was re-homed three times before we got him from the Dog's Trust, and he was only 1 year old. As a consequence, he was very mischievious when we first got him, and he still is now, but to a much lesser extent. My mum wants to get the shock collar to try and correct these bad behaviours - such as, charging up the stairs when he knows he's not allowed to, stealing food off the kitchen c