I have not seen the original note about this but of course agree with not touching dogs working. But I have lived abroad and moved to area where there was rabies and so taught my son , never to touch any dog at all without checking with an adult. I have done some years of hospital car service and you also get a problem the other way. If there is a dog in the house I have to ask the owner to shut the dog away before I come in. This is because A) dont want the dog to escape as we have no time to go round catching it up and the owner will be upset leaving it loose. B) when a patient is either going to stay in overnight or have equipment that they need with them I normally would pick up the bags etc and take them to the car. If I do that inside the house, naturally the dog will be defensive as I am a stranger in his area.C) not the dogs fault but if they are allowed to jump up at you, it can be frightening for some people but also you are wearing clean clothes and a uniform and will be picking up different people during the day. You do not look professional with dog hairs, or muddy marks on your clean outfit . I was brought up with dogs and my grandmother had quite a lot both inside and outside, but they - and us - were trained correctly. The dogs never bothered us at the table, were not allowed to eat from a plate a human used etc. We were never allowed to feed from the table or speak to the dogs whilst we were eating. Having the right rules for both animals and people means that everyone including the dogs knows what to do and what not to do and no one is getting worried.