Wolves had long been extinct in parts of Central Europe. Thanks to strict regulations to protect species, in recent decades they have become more widespread again. This brings new challenges: in many ...

In California, as wolf numbers grow — a remarkable return after a century — livestock producers are increasingly worried as these predators occasionally take down cattle. Gray wolves are an endangered ...

Two years after residents voted to reintroduce wolves in Colorado, ranchers there say too many of their cows are being killed. The state is now hiring people on horseback to help. Colorado ranchers ...

An environmental nonprofit wants Colorado Parks and Wildlife to have stricter rules guiding when wolves responsible for repeated livestock attacks can be killed. The Center for Biological Diversity ...