Most Montana State Parks allow pets. Twenty of Montana’s 54 state parks have more than 500 campsites to reserve. Pets on a leash no longer than 10 feet are allowed in the campgrounds, but must not be left unattended. Pets are not allowed at the following parks: Frenchtown Pond, Wild Horse Island, Smith River (pets are allowed only at the put-in and take-out if they are on leashes, not on the float), and Spring Meadow Lake (no pets during 4/16 – 10/14, pets allowed on leashes during 10/15 – 4/15).
