In Grand Mountain National Park, a family of animal caregivers, including parents Ranger Graham and Dr. Sarah Parker, and their 10-year-old daughter Zoe, navigate thrilling and perilous adventures alongside their loyal collie Lassie, while also assisting those in need amidst the park's rugged canyons.
Aired: Jan 19, 2014As winter's chill sets in, a trio of friends boldly disregard Graham's cautio...










































