Strict liability vs the one-bite rule — why your state decides the case

People talk about dog-bite law as if the United States had one. It does not. Roughly thirty-odd states make the owner pay for a bite without a prior-history showing. The rest still want you to prove knowledge or carelessness. A handful mix the two depending on where the dog was standing and which damages you want.

Strict liability

You show: this was their dog, it bit you, you were allowed to be there, you did not bring this on yourself. You do not show that the owner was a bad owner. California Civil Code § 3342 is the teaching example. Florida, Illinois, Michigan, New Jersey, and Ohio sit in this family, each with their own exceptions.

One-bite (and negligence)

The nickname is sloppy. It does not mean every dog gets one free mauling. It means the owner is liable if they knew or should have known the animal had dangerous tendencies — a prior bite, a habit of lunging, a warning they gave you themselves. Texas, New York, Virginia, and several others still live here. A leash-law violation can be negligence even on a “first” bite.

Exceptions that exist in both worlds

• Trespassing. Most statutes and common-law rules go cold if you had no right to be there.
• Provocation. Kicking, tormenting, or sometimes even surprising a restrained dog.
• On-duty police and military dogs.
• Comparative fault. Some states reduce your recovery if you share blame.

Look up your state. The map is the point of this site. Then read the exceptions — that is where insurers live.