I live in an area where a few of my residents keep many dogs as pets. I can understand where they are coming from, as these animals also safeguard their premises.
However, these dogs are not properly trained. They would bark viciously at a passer-by, which can send anyone into a state of shock, especially those who are unaware of the presence of dogs.
I urge these owners to at least train their dogs to be less aggressive to strangers, particularly those of us who pose no danger to them or their properties.