36 CFR § 327.11 - Control of animals.
(a) No person shall bring or allow dogs, cats, or other pets into developed recreation areas or adjacent waters unless penned, caged, on a leash under six feet in length, or otherwise physically restrained. No person shall allow animals to impede or restrict otherwise full and free use of project lands and waters by the public. No person shall allow animals to bark or emit other noise which unreasonably disturbs other people. Animals and pets, except properly trained animals assisting those with disabilities (such as seeing-eye dogs), are prohibited in sanitary facilities, playgrounds, swimming beaches and any other areas so designated by the District Commander. Abandonment of any animal on project lands or waters is prohibited. Unclaimed or unattended animals are subject to immediate impoundment and removal in accordance with state and local laws.
(b) Persons bringing or allowing pets in designated public use areas shall be responsible for proper removal and disposal of any waste produced by these animals.
(c) No person shall bring or allow horses, cattle, or other livestock in camping, picnicking, swimming or other recreation areas or on trails except in areas designated by the District Commander.
(d) Ranging, grazing, watering or allowing livestock on project lands and waters is prohibited except when authorized by lease, license or other written agreement with the District Commander.
(e) Unauthorized livestock are subject to impoundment and removal in accordance with Federal, state and local laws.
(f) Any animal impounded under the provisions of this section may be confined at a location designated by the District Commander, who may assess a reasonable impoundment fee. This fee shall be paid before the impounded animal is returned to its owner(s).
(g) Wild or exotic pets and animals (including but not limited to cougars, lions, bears, bobcats, wolves, and snakes), or any pets or animals displaying vicious or aggressive behavior or otherwise posing a threat to public safety or deemed a public nuisance, are prohibited from project lands and waters unless authorized by the District Commander, and are subject to removal in accordance with Federal, state and local laws.