Just a little more on that letter I suggested you write. DO NOT ADMIT ANY SPECIFIC GUILT... Again, do not incriminate yourself. Express your sincere sorrow (Because you truly are sorry, and should be), but do not include any specifics. This will all come out in your hearing anyway, no need to be painting an even worse picture. Say you are sorry for the incident and any distress it may have caused their dog or them. For heaven's sake, do not say that you knew you may have left your dog unattended for too long - or else your letter, which you have brought to show that you are sorry could actually be used as evidence against you!