Oh thanks everyone!! Now I understand! It is a very good thing, I had got totally the wrong end of the stick, I hadn't realised it was to protect your dogs. From what you have all said I am VERY glad it happens. Dogs are like babies, they only have you and have to trust you to look after them totally - when I see programmes about dogs being mistreated or kept in horrid conditions, it makes me feel sick to my stomach. Thank you doggy friends on line!!