What Ligers, Grolar Bears, and Mules Show Scientists About Evolution
What Ligers, Grolar Bears, and Mules Show Scientists About Evolution
In 2006, a hunter shot what he thought was a polar bear in the Northwest Territories of Canada. Closer examination, however, revealed brown patches on its white fur, uncharacteristically long claws and a slightly hunched back. The creature was in fact a hybrid, its mother a polar bear, its father a grizzly. Although this cross was known to be possible—the two species had mated in captivity…