Gracie is a 2-year-old border collie with a mission. She is Glacier National Park’s first “bark ranger” — a skilled herder, she keeps mountain goats and bighorn sheep away from park visitors.
Gracie also helps rangers teach visitors good park manners. Getting too close to wildlife to take selfies isn’t a good idea for animals or humans, for example. And trying to touch the wildlife isn’t smart either. Both are problems in national parks.