The grizzly is a race of the brown bear, and the brown and polar bears are very closely related. The two species diverged around 100,000 years ago.
Bears, in the taxonomic family of Ursidae, split off from other Carnivorans about 38 million years ago. Then the Ursinae subfamily originated around 4.2 million years ago. According to both fossil and DNA evidence, the polar bear split from the grouping of the brown bear, Ursus arctos, roughly 200,000 years ago. This is thought to have happened due to their isolation during a period of glaciation in the Pleistocene period.
panda bears are related to grizzly bears and some people say they are related to the raccoon.
the fur
The Giant Panda is a bear, native to central-western and south western China.
bears
Pandas, though they don't share the same genus name as other bears, are still considered bears even though they are mainly herbivorous, not carnivorous/omnivorous like polar bears, grizzly bears and black bears.
no they are not
Polar bears, black bears, brown bears, etc.
no they are not marsupials, and they are not related to pandas which are bears
Polar bears are closely related to grizzly bears, black bears, brown bears, sloth bears, etc.
Pandas, though they don't share the same genus name as other bears, are still considered bears even though they are mainly herbivorous, not carnivorous/omnivorous like polar bears, grizzly bears and black bears.
Grizzly bears are vertebrates.
Grizzly Bears are not extinct.