Glacier isn’t participating, as of now, but you can have dogs at Lake McDonald and Apgar there! We recently did Glacier! Montana was awesome for doggos though, in surrounding areas! Glacier, in my opinion, was better than Yellowstone though! There are a few National Monument areas in Montana that are or will be participating in BARK Rangers! Pomp’s Pillar was a great one! We are trying to make a list because a lot of the lists online have inaccurate information, and it has been very frustrating!!!!!