Rob and Jennifer Gunderson were visiting Yellowstone National Park for their anniversary, and couldn’t believe their eyes when they saw people walking right up to the 1,000-pound animal.

YELLOWSTONE, WY (KDVR) — It’s an alarming sight happening more and more often: tourists walking right up to adult bison and other large animals in Yellowstone National Park. Rob and Jennifer ...

Video captured the moments parents decided to let their children near bison at Yellowstone National Park. FOX31's Jared Dean explains how the animals are among the most dangerous in the national parks ...