Korea National Park Service's dog-accompaniment pilot applies only to named trails and specified lodging units, not to entire national parks. Officially listed Bukhansan sections include Seoul Bukhansan Elementary School–Baekhwa Temple and Bukhansanseong Second Parking Area entrance–Sugujeong restroom. Do not assume dogs are admitted on unrelated trails.
For overnight visits, the service identifies designated houses 5 and 6 at Gyeryongsan's Donghaksa campground and two dog-friendly House of Nature units at Gayasan Eco-Exploration Center. Their booking menus, application windows and lottery arrangements differ. The official pilot guidance mentions a maximum stay of three nights; check the particular unit's terms.
Dogs must be registered with evidence of rabies vaccination within the previous year; legally restricted dangerous dogs are excluded. Guidance sets a limit of one dog per person on trails and two dogs per lodging unit. Use a leash, collect waste and protect wildlife and other visitors.
Before departing, (1) choose a designated hike or stay, (2) select the exact trail or unit shown by KNPS, (3) prepare dog registration, vaccination and visitor details, and (4) verify remaining bookings, weather, wildfire and trail closures. The KNPS booking contact is 1670-9201; current service availability must be checked for the chosen date.