The state-level rules every owner and walker in Wyoming should know. Local leash lengths, licensing and off-leash rules are set by each city — find those on the city pages below.
Wyoming has no dog-bite statute — under Gannon v. Voss there are three routes (scienter, negligence, negligence per se), and scienter needs no prior bite once a dog has shown a vicious disposition.
Wyoming has no state dog-bite statute — it is a one-bite / negligence state (though local ordinances may create strict liability). The Wyoming Supreme Court (Gannon v. Voss, 2003) set out three routes: scienter (an owner or harborer who keeps a dog knowing of its dangerous propensities is liable — and a prior bite is not required; it is enough that the dog has shown a vicious disposition), negligence (which does not require a vicious dog — just a failure to use reasonable care), and negligence per se (violating a leash or at-large ordinance). The framework names owner or harborer, so a walker who harbors or controls the dog is within it.
Wyoming applies modified comparative fault with a 51% bar (§ 1-1-109), with trespass and provocation defenses. Wyoming is a prominent open-range state (relevant to rural livestock cases, less to dog-walking), and dangerous-dog rules are local. The personal-injury limit is four years.
This is general information about Wyoming law, not legal advice. Confirm current rules with the official state and municipal sources.