024-1 Wyo. Code R. § 1-10
(a) All pets must be in a vehicle or on a leash no longer than ten (10) feet in length and physically controlled at all times.
(b) Pets are prohibited in public eating places and food stores, public buildings, and on designated beach areas. EXCEPTION: This paragraph shall not apply to guide dogs.
(c) Dogs, cats or other pets running at large may be impounded by the superintendent and may be disposed of in accordance to W.S. ' 11-31-301. Any such animal that kills or seriously injures human beings or wildlife may be impounded by the superintendent in the interest of public safety and the protection of wildlife, subject to disposition in accordance with W.S. § 11-31-301.
(d) On park lands where hunting is permitted, by the Wyoming Game and Fish Commission, the lawful use of hunting dogs is allowed provided the area is open to hunting and the dogs' owners or handlers accompany and have control of such dogs and are responsible for the action of such dogs.
(e) Grazing or ranging domestic animals or poultry is prohibited without prior written authorization by the department or appropriate federal land managing agencies.
(f) Pets shall not be left unattended for any time greater than one hour.
(g) Horses are permitted on park lands except within designated areas. Exception: Horses being used in law enforcement activities.
(h) Parcels of park lands may be closed permanently or for a specified period of time to domestic pets in order to protect wildlife or adjacent landowners' rights.
(i) Persons with pets on lawns, picnic and camping areas will be responsible for proper removal and disposal of the animal's waste.
024-1 Wyo. Code R. § 1-10