YELLOWSTONE NATIONAL PARK -- Exclusive video showing Yellowstone visitors dangerously close to a grizzly bear caused many to wonder how something like that could happen. Park officials say the rules are clear: people must stay at least a hundred yards from a bear, but bear specialist Dave Smith says the park needs to adopt a policy similar to one used in another national park.

"Glacier's policy is simply that they don't tolerate roadside bears," he said, "they don't want bears to habituate to people, to get accustomed to having people that close."

Glacier National Park's policy is to frequently haze bears when they come into close contact with humans. Yellowstone spokesman Al Nash claims Yellowstone rangers haze bears as well, but every park handles things differently.

"We are much less likely to haze a bear that might happen to be out somewhere along a roadside," he said.

Yellowstone park covers 2.2 million acres, Nash says it's just too large to stop every incident like this from happening.

"It's just not possible for us to have a uniformed park service employee nearby at every location where something might occur," Nash claimed.

Though the parks may differ on their policies to control animal and human interaction, most agree visitors must take some responsibility for their safety.

"The issue that we saw on tape wasn't an issue regarding a bear, it was an issue regarding visitors," Nash emphasized.

"If you're in the ocean and you yell shark everybody runs out of the water," Smith noted, "if you're in Yellowstone and you yell bear, everybody grabs a camera and gets closer."