The state-level rules every owner and walker in Mississippi should know. Local leash lengths, licensing and off-leash rules are set by each city — find those on the city pages below.
Mississippi has no dog-bite statute — it is a common-law one-bite / dangerous-propensity state (Poy v. Grayson) — but a prior bite isn't required, and violating a local leash ordinance is negligence that can reach the handler holding the leash.
Mississippi has no dog-bite statute — liability is governed by common law. Under Poy v. Grayson (Miss. 1973), a victim must show the dog had exhibited some dangerous propensity or disposition before the attack, and that the owner knew or reasonably should have known of that propensity and should have foreseen the dog was likely to attack. It is often called the one-bite rule, but that label understates it — the owner does not get one free bite in every case.
Mississippi courts have made clear a dangerous propensity can be shown by more than a prior bite. Evidence of the dog growling, lunging, snapping, jumping on visitors, or fighting other animals can put the owner on notice of a proclivity for violence. In Mongeon v. A & V Enterprises, notice that dogs had been growling at people in the same area before the attack was enough for a jury to infer the owner should have known. So the question is knowledge of dangerousness, not whether the dog literally bit someone first.
Separate from the propensity theory, a victim can sue in ordinary negligence: the keeper or handler has a duty of reasonable control over the dog. Because there is no statewide leash law, local city and county ordinances govern — and violating a leash or running-at-large ordinance is negligence (potentially negligence per se). This route does not require proving the dog was known to be dangerous, and it can reach whoever was in control of the dog, not just the legal owner.
Leash rules are local — counties and cities set at-large and leash ordinances — while rabies vaccination is required statewide for every dog three months or older. Core defenses include trespass and provocation. Mississippi is a pure comparative negligence state (§ 11-7-15): a partly-at-fault victim still recovers, reduced by their share of fault, with no percentage bar. The personal-injury statute of limitations is three years (§ 15-1-49).
This is general information about Mississippi law, not legal advice. Confirm current rules with the official state and municipal sources.