Dog bites are more common than people think, and the injuries — especially to children — can be lasting. Wisconsin law gives bite victims a stronger starting position than in many states.
Strict liability
Under Wisconsin law, a dog's owner is liable for the damages the dog causes to a person, another animal, or property. Importantly, the owner generally cannot escape responsibility by arguing the dog had never bitten anyone before — the "one free bite" defense does not carry the day here. The claim still requires proving the bite, the injuries, and who owned the dog.
When damages double — and why it's narrower than people think
Wisconsin does allow recovery of twice the full damages, but the bar is specific. Under Wis. Stat. § 174.02(1)(b), the doubling applies only when the dog bit with enough force to break the skin and cause permanent physical scarring or disfigurement, and the owner knew or had been notified that the dog had previously bitten someone, without provocation, causing that same degree of injury. Both the earlier bite and the current one have to clear that standard.
So it is not simply "the dog bit before, so damages double." That said, the full-damages claim under § 174.02(1)(a) does not depend on any of it — a first bite is enough.
How these claims are usually paid
Dog-bite claims are most often resolved through the owner's homeowner or renter insurance rather than out of the owner's own pocket, which sometimes makes people hesitant to pursue them against a neighbor or friend. Because facial scarring and nerve damage can be permanent, especially in children, it is worth understanding the full value of the claim before deciding what to do.