The state-level rules every owner and walker in South Dakota should know. Local leash lengths, licensing and off-leash rules are set by each city — find those on the city pages below.
South Dakota has no dog-bite statute — it's a one-bite / negligence state where the owner's duty is "reasonable control", so a leash-ordinance violation is negligence per se even without a prior bite.
South Dakota has no dog-bite statute — it is a one-bite / negligence state. Under scienter (Sybesma v. Sybesma), the owner is liable if they knew of the dog's dangerousness and permitted the attack. Under negligence — which does not require a vicious dog — the victim shows the owner failed to use reasonable care (for example, failing to keep the dog leashed or properly contained); SD case law frames the owner's duty as keeping the dog under reasonable control. A local leash or at-large violation is negligence per se. Liability requires the defendant to have owned or controlled the dog, so a walker in control is within the framework on either track.
South Dakota applies modified comparative fault, with provocation and trespass defenses, and dangerous-dog rules are local (Sioux Falls, Rapid City). The personal-injury limit is three years.
This is general information about South Dakota law, not legal advice. Confirm current rules with the official state and municipal sources.