In the winter bears go through hibernation. The bear was hungry and ill-tempered after it's long hibernation.
There are many animals besides bears that go into hibernation every year. Some species of bat hibernate as do hedgehog, squirrel, dormice and even some birds.
No, the whole metabolism shuts down to almost nothing.
Yes, polar bears eat up alot of food to last a whole winter and when they go into hibernation, they digest the food slowly, making it last the winter. This is all while they are in hibernation, they eat alot of food before they go into hibernation.
Yes, rival tribes of panda bears.
No
Panda bears can be found in tropical rainforests and jungles.
Panda bears are necessary for humans to exist.
Panda Bears are native only to China.
When bears go to sleep in the winter, it is called Hibernation. Squirrels, birds, and other animals who dislike the cold do the same thing.
Tokyo is in Japan, and panda bears are not native to the Japan. Thus, you would not find a wild panda in Tokyo. However, there are probably panda bears in zoos in Tokyo.
For black bears and grizzly bears, from spring to fall, with heightened periods when bears come out of hibernation and when they're fattening up for hibernation. For polar bears, it can be any time of the year.