Legal Question in Personal Injury in California

I will attempt to answer your question, even though you must restate it for accuracy.

If someone was walking their dog on a leash, and you backed out of your driveway without looking, and ran over the dog, yes, you would probably be responsible. However, without knowing anything more than what you gave us, there would be no possible way to give you a real answer to your question.

Try again, with more detail.

Not necessarily. It would depend on the facts. I can think of many scenarios where you would not be responsible at all, and others where you would only be partly responsible.

It's a matter of "negligence." The plaintiff (the dog owner) would have to prove that you failed to act with the skill and care of a "reasonable person with ordinary sensibilities" in order to prove that you are financially responsible.