"If someone is irrationally phobic of hights or spiders etc, you wouldn't demand that all buildings become one story, or we round up all the spiders, you would tell the effected people to use some kind of therapy to overcome their phobia" A fear of dogs is surely NOT irrational. These fears cannot really be compared to a fear of dogs. Dogs have been known to attack human beings, therefore it is only sensible to show caution when an unknown dog approaches.