36 CFR § 331.23
Control of animals
November 4, 2020
(a) No person shall bring or allow horses, cattle, or other livestock in the WCA.
(b) No person shall bring dogs, cats, or other pets into the WCA unless penned, caged, or on a leash under 6 feet in length, or otherwise under physical restraint at all times. Unclaimed or unattended animals are subject to immediate impoundment and removal in accordance with State and local laws.