@Ian117 Well, isn't that what auto insurance is for (the broken window)? I don't see a need to refund for that. As to the dog, hmmm.
I wouldn't refund for that either unless the guest can identify the dog and the location where the dog chased them. If the dog was down the street or otherwise away from your space, I don't know how they can hold you accountable for that.
The guest may leave a review stating that their car window was broken into. That's a statement of fact (if it happened) and there's not much you can do about that since it isn't a violation of Airbnb's Review Guidelines. You can always respond to a review like this by saying that you offered to assist them in filing a police report which they declined. Future guests will get it.