We have a 7 year old blind mutt which was a stray and we have had for couple of years. He was an outside dog (met the owners)so never officially toilet trained but when we have had him in house he will let you know when he needs to go. We have kept him living outside in kennel but over last year he has worked his way into the house more and more (they get under your skin) and in last couple of months he has started to sleep in the house at night. For the most part this is fine but on 2 occassions now we have worken up to doggie present waiting for us in the kitchen!! This morning he wet his bed also. We don't know why he is doing this as he gets his walks and we let him go out every night before we go to bed (after 10pm) and we are up from 6am. He knows he should not do it as on both occassions he been sitting at the other end of the kitchen with his head down. I am not sure what we can do to stop this; has anyone experienced this and if so do you have any advice on how we can get around this?