"I am honored to welcome our canine friends back to Colorado after their long absence," Colorado Governor Jared Polis said.
The development of farming and introduction of livestock during the Neolithic Revolution was an opportunity for the African wolf and boosted populations, suggests study.
The reports are unconfirmed but park officials have launched an investigation following eyewitness accounts and other evidence that "strongly suggests" a pack of wolves are living in Colorado.
"They develop this lifelong outlook that people just aren't a big deal," said senior Yellowstone wolf biologist Doug Smith.
Researchers also found modern Arctic sledge dogs appear to be direct descendants of those brought over from Siberia and Alaska.
"I saw that alpha females are the true leaders of the pack, not the big alpha males. Wolves have a matriarchal society and males seem to totally accept that, " expert Rick McIntyre said.
Conservationist groups are offering a reward of €30,000 ($33,000) for information about the disappearance of Naya, the first wolf spotted in Belgium for over 100 years. The wolf and her cubs are feared to have been killed by hunters.
Eastern equine encephalitis is a potentially fatal virus native to the eastern part of the United States which is spread by infected mosquitoes.
OR-7 has inspired activists worldwide. His 17 pups have moved across Southern Oregon and Northern California. Unwittingly, he has done more for his species than any other wolf.
A mysterious animal killed last month is identified as a gray wolf from the northern Rocky Mountains.
"Federal protections for wolves are essential to help the species recover and expand."
72-year-old Marcos Rodríguez Pantoja was never able to integrate with humans after being torn away from his wolf pack aged 19.
Eating dogs would have been considered taboo at the time, yet the researchers found evidence that the ritual was performed by this particular community repeatedly.
Wolves have been making a comeback in France since the early 1990s.
$5,000 reward offered for info leading to an arrest in the shooting of the well-known and much-loved white wolf.
A hybridized canid made up of coyote, wolf and dog genes is expanding across the eastern U.S.
The state's Department of Fish and Wildlife has attained video evidence of a family of wolves
According to DNA research, the split between dogs and wolves occurred longer ago than we realized.