Republicans in the U.S. Senate, including Sen. Ron Johnson of Wisconsin, have introduced a bill to remove the gray wolf from federal protections.

Now, researchers have bred gray-wolf pups that carry genes of their ancient cousins. By Carl Zimmer Carl Zimmer writes the “Origins” column and has covered de-extinction for more than a decade.

The dire wolf is a relative of the now-common gray wolf, with clear differences apparent between the two species' skeletons.

Colossal Bioscience says it has “de-extincted” the dire wolf, but other scientists disagree and say more important ...

As soon as Colossal Biosciences declared that it brought the dire wolf back from extinction, everyone felt a sense of wonder.

Boston Celtics star Jaylen Brown is aware of his franchise's storied history. That includes recognizing some of the best players to ever play for the Celtics, like Hall of Fame forward Paul Pierce.

Not only that, they’re dire wolves—which means they have cause to be lonely. The dire wolf once roamed an American range that extended as far south as Venezuela and as far north as Canada ...

Most experts USA TODAY spoke with agreed that attempts to de-extinct animals, like the dire wolf, result in animals that are not the same as their ancestors and are actually hybrid animals.

A group of scientists claims to have brought back to life a species of wolf that went extinct more than 10,000 years ago - but is it true? Here's all we know about the three pups created by ...