But in North America, especially in Yellowstone ... each wolf has two copies of a color gene, of which there are two possible alleles: gray or black, the latter being dominant. The 2018 study, ...

Through careful management efforts, gray wolf populations slowly grew, and the return of wolves to Yellowstone, central Idaho, and elsewhere has been among America’s greatest conservation victories.

Sitting down to write this week’s Nature Smart column, I first checked my email. And there it was, a half a dozen emails all with the same subject line: “06 gray shot and killed.” ...

The reintroduction of wolves to Yellowstone ... U.S. gray wolves. In fall 2020 the Trump administration finalized its decision to remove federal protection from every gray wolf in the contiguous ...