Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Representatives with the Center for Biological Diversity say this is a picture of the wolf that has been seen around the North Rim of the Grand Canyon. 
  
 A wayward gray wolf has been spotted several times this month around the North Rim of Grand Canyon National Park, according to conservationists. 
  
 The wolf, which is wearing an inactive radio collar, could be the first of its species to roam Arizona in 70 years; gray wolves were exterminated from the state in the 1940s. 
  
 Federal authorities are investigating the sightings. Representatives from the U.S. Fish and Wildlife Service (FWS) said they are trying to confirm whether the animal is actually a wolf or a "wolf-dog hybrid" by collecting a feces sample. [In Photos: The Fight Over Gray Wolves' Endangered Status] 
  
 The animal doesn't appear to be a hybrid, at least in photos taken by observers, but the possibility can't be ruled out until a genetic test is conducted, said Michael Robinson, a wolf advocate with the Center for Biological Diversity, a nonprofit environmental group based in Tucson. 
  
 "Until more is known about this animal, visitors to the area are cautioned that this may be a wolf from the northern Rocky Mountain population and [is] fully protected under the Endangered Species Act," FWS representatives said in a statement. 
  
 If the wolf did indeed come from the northern Rocky Mountain population, it would have traveled across hundreds of miles to get to northern Arizona; the southernmost breeding population of gray wolves in the Rockies lives just south of Yellowstone National Park in Wyoming, Robinson said. 
  
 Gray wolves once lived across most of the continental United States, but the predators were aggressively hunted and sometimes killed for bounties through the early 20th century. By the mid-20th century, the only places gray wolves could be found below the Canadian border were a sliver of land in northern Minnesota and Michigan's Isle Royale. 
  
 The species was then protected under the Endangered Species Act in the 1970s. Conservation efforts and reintroduction programs helped gray wolves return to parts of their range. There are now more than 5,000 gray wolves in the continental United States, primarily in the western Great Lakes states of Michigan, Minnesota and Wisconsin, and the northern Rocky Mountain states of Idaho, Montana and Wyoming, as well as eastern Oregon and Washington. 
  
 A small population of Mexican wolves (a subspecies of gray wolves) has also been reintroduced to parts of Arizona and New Mexico. The gray wolf spotted in Grand Canyon National Park does not appear to be a Mexican wolf, because its body is bulkier and its ears are more compact than those of a typical Mexican wolf, Robinson said. 
  
 The sightings of the Grand Canyon gray wolf are reminiscent of another recent episode involving a wandering male wolf, OR-7, also known as Journey. OR-7 rose to fame in 2012 after he left his pack in Oregon to go to California, becoming the first known wolf in the state in 87 years. Since then, the wolf (which is tracked by a radio collar) has gone back and forth between Oregon and California several times. As of this summer, he was raising his first puppies with a mate. 
  
 OR-7's travels raised hopes that California could once again be home to wild wolves. Similarly, the lone wolf in Arizona is an encouraging sign that it's possible for the species to make a comeback in the remote lands around the Grand Canyon. 
  
 Unfortunately, many roving wolf stories don't have happy endings. When wildlife officials find out about a wolf that has ventured outside its usual territory, it's often because the creature has been shot or found dead, Robinson said. Last year, coyote hunters shot and killed wolves in Missouri and Kansas. A wolf that wandered from Montana to Colorado in 2009 was killed by poison. 
  
 The U.S. Fish and Wildlife Service has put forth a proposal to take gray wolves off the Endangered Species List, claiming that recovery goals have been met for the animals. Earlier this year, an independent peer review concluded that there is wide disagreement about some of the science the agency used to support the proposal. Some biologists and conservationists have voiced concern that delisting the wolves would prevent the species from recolonizing other states and leave the animals vulnerable to unsustainable hunting policies. FWS officials were expected to make a final ruling on the embattled proposal by the end of the year. 
  
 Follow Megan Gannon on Twitter and Google+. Follow us @livescience, Facebook & Google+. Original article on Live Science. ||||| Christine Dell'Amore 
  
 National Geographic 
  
 Published November 1, 2014 
  
 The chase is on to identify the "wolflike animal" that's been spotted multiple times recently near the Grand Canyon's North Rim. 
  
 If the animal turns out to be a gray wolf, as some wildlife experts suspect—and hope—the sightings would mark the first time a gray wolf has been seen in the Grand Canyon area since the 1940s. 
  
 People nearly hunted the predator to extinction in the United States, where it had roamed across much of the country for centuries. 
  
 Several people have photographed the Grand Canyon canid, which is wearing some kind of collar, on Arizona's Kaibab Plateau in recent weeks, just north of Grand Canyon National Park, according to the U.S. government. 
  
 If it's not a gray wolf, it's likely a Mexican gray wolf, which is a rarer subspecies, or a wolf-dog hybrid, says Jeff Humphrey, public affairs specialist for the U.S. Fish and Wildlife Service's Southwest Region. 
  
 NG STAFF. SOURCE: NATIONAL PARK SERVICE; U.S. FISH AND WILDLIFE SERVICE; USGS 
  
 Any of those animals could wear a collar, but the mystery animal's collar looks similar to those used in the Northern Rocky Mountains, where the gray wolf was reintroduced in 1995, according to a FWS press release. (See an interactive of the return of the wolf to much of the United States.) 
  
 Based on photographs, the animal also does not appear to be a Mexican wolf—which is smaller than a gray wolf. 
  
 The only way to definitively identify it, Humphrey told National Geographic, is to analyze the DNA in its poop—which the agency is doing now. 
  
 Until the analysis is complete, the government is asking the public to treat the creature like a gray wolf from the Northern Rocky Mountains, which is an endangered animal with federal protection. (See more stunning gray wolf pictures.) 
  
 Based on their recent rebound—there are now 1,700 gray wolves roaming the West after their population had been limited to the upper Midwest for decades—the Fish and Wildlife Service proposed taking the species off the Endangered Species List in 2013. 
  
 "Our first area of concern is the welfare of the animal," Humphrey said, especially since the Grand Canyon is heavily visited. 
  
 Photograph by Jim and Jamie Dutcher, National Geographic 
  
 Super Roamers 
  
 Gray wolves are legendary for traveling long distances, and it's feasible that an animal could have traveled from its home in Wyoming or another Rocky Mountain state through Utah and into Arizona, experts say. 
  
 At about two or two-and-a-half years of age, young wolves set out seeking new territory, often roaming far from their homes, said National Geographic Young Explorer Jay Simpson. 
  
 For several months this year, Simpson tracked a lone gray wolf, dubbed OR-7, through Oregon into California as part of the Wolf OR-7 Expedition. 
  
 Wearing a GPS collar, the young male traversed over 1,200 miles (1,931 kilometers) to become the first and only documented free-roaming wolf in California in nearly 90 years, according to the expedition website. (See a related video of OR-7's epic journey.) 
  
 Based on the attention that the Fish and Wildlife Service is putting on the case, Simpson suspects the Grand Canyon animal is a gray wolf. 
  
 "It's really exciting in the sense that wolves continue to display remarkable abilities—they continue to disperse to areas where they previously lived." (Read "Wolf Wars" in National Geographic magazine.) 
  
 If the Grand Canyon animal is a gray wolf that's wearing a GPS collar, the collar must be out of batteries, since Humphrey said efforts to track it have been unsuccessful. (Read how scientists collar wild wolves.) 
  
 Simpson said collaring is crucial for understanding animal behavior—for instance, if the wolf did have a functional collar, it would reveal "invaluable data" about where it has been, including how the animal negotiated various terrain—and threats—through the Northern Rockies. 
  
 Follow Christine Dell'Amore on Twitter and Google+. |||||
Output:
There's a new visitor roaming the Grand Canyon National Park's North Rim, and it's not exactly the fanny-pack-wearing/Nikon-toting variety: As National Geographic reports, wildlife officials are scrambling to confirm multiple sightings of a "wolf-like animal" that's believed to be a gray wolf—if it is, it would be the first gray wolf in the area since hunting eradicated the animals from Arizona in the 1940s. The creature is wearing an inactive tracking collar, notes LiveScience, and the Fish and Wildlife Service is attempting to obtain a feces sample so that it can confirm whether it is indeed a gray wolf; other possibilities include a wolf-dog hybrid, though officials say it doesn't resemble that, or a Mexican gray wolf. Meanwhile, don't mess with the critter: "Until more is known about this animal, visitors to the area are cautioned that this may be a wolf from the northern Rocky Mountain population and [is] fully protected under the Endangered Species Act," says FWS in a statement. (He wouldn't be the first gray wolf to have wandered long distances; this guy apparently did it for love.)