[Frapster]

You attribute the cause of a dog’s behavior to responsible or irresponsible ownership. While i agree that it can be a factor it fails to take into account that a dog does have a mind of its own. A well trained dog can do vicious and unintended things in the right circumstances.

[kanawa]

You attribute the cause of a dog’s behavior to responsible or irresponsible ownership.

No, a dog's behavior has its own motivations.

...a dog does have a mind of its own.

Right

A well trained dog can do vicious and unintended things in the right circumstances.

Right, and that is why it is of primary importance for the responsible owner
to be aware of and plan/act and control according to this knowledge.