GRAND CANYON, Ariz. — On a routine patrol, park ranger Stephanie Sutton spots a looming confrontation between tourist and nature — in this case, the driver of a white SUV and a 500-pound elk.

After all, the Grand Canyon is the most visited natural ... from the Pleistocene (the last "Ice Age"). Some of the extinct Pleistocene animals found in the park include Harrington's mountain ...

When some couples visit the Grand Canyon ... condors nearly went extinct during the 1980s. As scavengers, the birds feast primarily on roadkill, carrion and other animals’ leftovers.

Estimates on the number of animals left by the 1880s ... in bringing them from the brink of extinction. The bison were at the Grand Canyon before the Forest Service even existed, Hannemann ...

Nature, food, landscape, travel/Getty Images The Grand Canyon wants travelers to stop leaving so-called “love locks” on fencing in the park, warning the trend endangers animals. The “love ...

We are the Havsuw' Baaja, the People of the Blue-Green Water; we live in the Grand Canyon. Since time immemorial ... Its waters nurture the Havasupai people, our animals and our crops.

“I’m afraid this bass population boom portends an entirely avoidable extinction event in the Grand Canyon,” said Taylor McKinnon, Southwest director for the Center for Biological Diversity. “Losing ...

"Sea levels were so high that sediments like the Tonto Group were deposited atop most continents in environments that allowed rapid expansion of animal ... Grand Canyon radiated and then went ...

However, some of these animals may need help to continue to live in the Grand Canyon State ... the necessary help they need so they don't go extinct. Here are the current endangered or threatened ...