If you have vast amounts of space, like the US or Australia have, I think it's kinda natural to start getting another perspective. Especially in a place where Australia which has seen a fabulous economic upturn for more than a decade. Some people just forget that everything has its price.
With the dogs was an experience I made especially during my work for World Vision where we went to Geelong, the Melbourne suburbs and such for knocking doors. Every time I went past a garden that had dogs in it, really just passing it on the street, they would come, jump against the fence, bark and often even growl until I was out of sight. They were frighteningly agressive.
One time I went to a family house with a large dog. They needed to calm him down, then I could go in. There the dog was quiet and eventually they let him out in the garden. Then I left the house and had to go past the fence. The dog would come running to the fence barking as if I was to jump over it.
Not that those dogs don't exist in Germany or the States, but not in that frequency and often not as aggressive. I don't know if it's the heat or whatever, but people should do something about their dogs. Especially if they live in a neighbourhood with a garden going to the front. Dog schools are such a great innovation. Sometimes I couldn't even go to a house because of the dogs.