The Ethiopian wolf is the smallest of the group, only weighing 11 to 20 kilograms (24 to 42 pounds). In Yellowstone National Park, a tracking device was placed on a male wolf known as 495M ...

The death of a male wolf -- one of the gray wolves released in Colorado last winter -- is another sign of difficulty in re-establishing the animals in Colorado. The wolf was believed to be a ...

A gray wolf brought to Colorado from Canada as part of the second round of reintroductions was killed in Wyoming after it was ...