Visitors to Yellowstone National Park were shocked when they saw what appeared to be a dog with a collar running loose in the area—only to realize it was a large black wolf. Marcela, a national parks ...

But within a few thousand years, generations of domesticated life had started to become visible in dogs’ bones. The oldest ...

"Anyone saying this isn't a wolf shows that humans have lost some of our basic survival instincts," said one commenter on the ...

Wolves and dogs don’t normally breed in the wild, largely because wolves are so territorial. But an exception has been found. While wild dog-wolf hybrids had previously only been suspected through ...