Bears not included in Ursus, such as the giant panda, are expected to be unable to produce hybrids with other bears. All the Ursinae species (i.e., all bears except the giant panda and the spectacled bear) appear able to crossbreed.
Can a panda beat a grizzly bear?
While giant pandas may look friendly and cuddly, they can be more dangerous than they look. In a recent study involving 151 carnivores, the panda earned 5th place. With a bite force of almost 1300 Newtons, only lions (1315 N), grizzlies (1410 N), tigers (1472 N), and polar bears (1647 N) beat the panda.
Do black bears and grizzlies mate?
But the two species probably diverged less than a million years ago. By contrast, North American black bears and grizzly bears diverged about five million years ago, he says. Scientists just never expected a polar bear and grizzly to mate in the wild. Both species require an extended mating ritual to reproduce.
Who would win a grizzly bear or polar bear?
A grizzly bear is likely able to beat both a polar bear and a black bear in a battle for survival.