A gray cat living an extraordinary life of visits to the beach and trips to the lake went on his biggest adventure alone: traveling hundreds of miles from Wyoming to California.

A surprise eruption of steam in a Yellowstone National Park geyser basin that sent people scrambling for safety as basketball-sized rocks flew overhead has highlighted a little-known hazard that scientists hope to be able to predict someday.

A surprise eruption in Yellowstone National Park has shot steam, water and dark-colored rock and dirt an estimated 100 feet into the sky and sent people running for safety.

Yellowstone National Park officials say a gunman killed by park rangers as he fired a semiautomatic rifle at the entrance of a dining facility with 200 people inside had told a woman he planned to carry out a mass shooting.

Native American religious ceremonies with dancing, drumming, singing and the retelling of a sacred legend commemorated the recent birth of a rare white buffalo calf in Yellowstone National Park.

The recent appearance of a rare white bison calf has excited wildlife watchers in Yellowstone National Park.

Photos of a white bison calf in Yellowstone National Park have generated excitement as well as questions: How does that happen.

The reported birth of a rare white buffalo calf in Yellowstone National Park fulfills a Lakota prophecy that portends better times.

Actor Pierce Brosnan has pleaded guilty to stepping off a trail in a thermal area while visiting Yellowstone National Park.

Pierce Brosnan has been in hot water plenty of times as an actor playing the secret agent James Bond.

An Arizona woman who suffered spinal fractures and collapsed lungs after being gored by a bison in Yellowstone National Park has said “yes” to her boyfriend's hospital proposal.

The 47-year-old woman from Phoenix suffered "significant injuries to her chest and abdomen" as she was walking away from the animal and it charged, officials said.

Yellowstone National Park officials say they had to kill a newborn bison after a man picked it up and the animal's herd wouldn't take it back.

U.S. wildlife officials have taken the first step to lift federal protections for grizzly bears in the northern Rocky Mountains, which would open the door to future hunting in several states.

Thirteen bison were killed or had to be euthanized after they were struck by a semi-truck involved in an accident with two other vehicles on a dark Montana highway just outside Yellowstone National Park.

A Montana judge said he would decide Tuesday whether to continue temporary limits on wolf hunting in the state or to restore quotas and hunting methods before a trial over whether the public was given an adequate opportunity to weigh in on changes in the way the state estimates the size of the wolf population.

Yellowstone National Park officials say a foot found floating in a hot pool last summer belonged to a 70-year-old man from Los Angeles.

Environmental groups are hailing a decision by the Biden administration to resume studying whether grizzly bears should be restored to the remote North Cascades mountains in Washington state.

Idaho's top wildlife official says the state's wolf population appears to be holding steady despite recent changes by lawmakers that allow expanded methods and seasons for killing wolves.

Yellowstone National Park officials say part of a foot found in a hot spring this week is believed to be linked to a July 31 death.

Yellowstone National Park officials are investigating after an employee spotted part of a foot, in a shoe, floating in a hot spring in the southern part of the park.

Flooding that devastated Yellowstone National Park last month has generated calls from weather experts for changes to the way the government issues weather forecasts as extreme weather becomes more frequent.

Grand Canyon National Park has decided not to extend a pilot project this fall that used volunteers to kill bison to downsize the herd.

Throngs of tourists have gleefully returned to watch geysers erupt and bison cross roads at Yellowstone National Park as it partially reopens following destructive floods.

Federal officials say most of Yellowstone National Park should reopen within the next two weeks.

With Yellowstone National Park pushing to re-open to tourists more quickly than anticipated after record floods pounded southern Montana, some of those hardest hit in the disaster live far from the famous park’s limelight and are leaning heavily on one another to pull their lives out of the mud.

Yellowstone National Park will partially reopen at 8 a.m. Wednesday, after catastrophic flooding destroyed bridges and roads and drove out tourists.

Yellowstone National Park is celebrating its 150th anniversary as it faces its biggest challenge in decades.

Businesses in some of the gateway towns leading to Yellowstone National Park are worried about the coming weeks and months after severe flooding closed the park.

Yellowstone National Park officials say more than 10,000 visitors have been ordered out of the nation’s oldest national park after unprecedented flooding tore through its northern half, washing out bridges and roads and sweeping an employee bunkhouse miles downstream.

Flooding has wiped out roads and bridges and closed off all entrances to Yellowstone National Park at the onset of the busy summer tourist season.

Actor Kevin Costner has agreed to narrate a four-part series on the 150th anniversary of the Yellowstone National Park for the Fox Nation streaming service.

A judge has restored federal protections for gray wolves across much of the U.S. after they were removed in the waning days of the Trump administration.

Montana wildlife commissioners are shutting down gray wolf hunting and trapping in areas bordering Yellowstone National Park amid criticism over 23 wolves being killed after roaming from the park in recent several months.

Twenty of Yellowstone National Park’s renowned gray wolves roamed from the park and were shot by hunters in neighboring states in recent months.

As many as 900 bison from Yellowstone National Park could be shot by hunters, sent to slaughter or placed in quarantine this winter in a program that seeks to prevent the animals from spreading a disease to cattle.

Americans may soon get a better glimpse into a future of green-friendly transportation by visiting a U.S. national park.

Scientists found that an unconventional way of reducing the frequency of deer-auto collisions could be allowing wolves to roam a landscape.

This undated photo provided by the National Park Service shows Fort Yellowstone Cemetery, in Yellowstone National Park, Wyo. A Utah man has pleaded guilty after authorities said he was caught digging in a Yellowstone National Park cemetery in search of hidden treasure. – A Utah man has pleaded guilty after authorities said he was caught digging in a Yellowstone National Park cemetery in search of hidden treasure. Craythorn caused more than $1,000 in damage by digging in the Fort Yellowstone Cemetery between Oct. 1, 2019, and May 24, 2020, prosecutors alleged. Several people seeking the treasure had to be rescued from precarious situations and as many as six died.

FILE - In this July 6, 2011, file photo, a grizzly bear roams near Beaver Lake in Yellowstone National Park, Wyo. Wildlife managers are offering an up to $2,000 reward for information about the illegal killing of a grizzly bear in central Wyoming. Grizzlies in the Yellowstone region are federally protected as a threatened species. – Wildlife managers in Wyoming are offering an up to $2,000 reward for information about the illegal killing of a grizzly bear. Grizzlies in the Yellowstone region are federally protected as a threatened species.

Grizzlies raid caches of whitebark pine cones that are hidden by squirrels and devour the seeds within the cones to fatten up for winter. The officials added that overall, whitebark pine stands have seen severe reductions in regeneration because of wildfires, a fungal disease called white pine blister rust, mountain pine beetles and climate change. As with whitebark pine, loss of the bee's habitat was considered less important than other threats. The two cases underscore a pattern of opposition to habitat protections by the administration of President Donald Trump, environmentalists said. Whitebark pine is another example of that,” said Noah Greenwald with the Center for Biological Diversity.

A 72-year-old California woman was gored by a bison in Yellowstone National Park, a news release from the park said. The woman approached the bison to take a picture and got within 10 feet of it multiple times before it gored her on June 25, according to the release. The news release said the woman approached the bison several times near her campsite at Bridge Bay Campground in northwest Wyoming before the bison charged. "To be safe around bison, stay at least 25 yards away, move away if they approach, and run away or find cover if they charge." Park visitors must stay 25 yards away from all large animals in the park including bison, elk, bighorn sheep, deer, moose and coyotes, the release said.