The state-level rules every owner and walker in Idaho should know. Local leash lengths, licensing and off-leash rules are set by each city — find those on the city pages below.
Idaho became a strict-liability state in 2016 — its statute names the possessor or harborer (a walker) as a liable party, supplanting the old one-bite rule that many sources still cite.
Idaho is a state where older sources are wrong — many still call it a pure one-bite state. In 2016 the Legislature added Idaho Code § 25-2810(11), imposing strict liability: a dog that, unprovoked, physically attacks, wounds, bites, or otherwise injures a person who is not trespassing subjects either its owner or any person who has accepted responsibility as the possessor or harborer to liability. A 2021 Idaho Supreme Court decision confirmed the statute supplanted the prior common-law one-bite theories. Because it says otherwise injures, it covers non-bite injuries — and because it names the possessor or harborer, a dog walker or sitter is a named, strictly-liable party.
The defenses (§ 25-2810(5)) are that the victim was trespassing, the dog was provoked (conduct a reasonable person would recognize as likely to cause a bite), the dog was a working hunting, herding, or predator-control dog being interfered with, the dog was a service animal, or the person was intervening between fighting animals.
Idaho applies modified comparative negligence with a 50% bar (§ 6-801), and local leash and dangerous-dog ordinances layer on top. The personal-injury limit is two years.
This is general information about Idaho law, not legal advice. Confirm current rules with the official state and municipal sources.