1Grizzly bear's bite
A grizzly bear's bite is estimated to be strong enough to crush a bowling ball.
A bear named Wojtek fought in the Polish Army during World War 2. He carried shells to the frontline and was taught to salute.
Polar bears actually have black skin and clear hollow fur. The clear and hollow fur enables the sun rays to get to the black skin that keeps the polar bears warm in the cold climate.
A group of panda is called an Embarrassment.
Grizzly bears were so feared and respected by Native Americans that hunting them required a company of 4 to 10 warriors and was done with the same preparation and ceremoniality as intertribal warfare.
The part of the reason it is so hard to get Pandas to mate is that the female Panda is only fertile for a short period in the spring. Their sexual interest lasts just 24-72 hours per year.
A bear cub named Winnipeg was exported from Canada to the London Zoo in 1915. A little boy named Christopher Robin Milne loved to visit Winnipeg (or Winnie for short) and his love for the bear cub inspired the stories written by his father, A.A. Milne, about Winnie-the-Pooh.
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Certain bears in Russia have become addicted to sniffing Jet Fuel out of discarded barrels. They are going as far as stalking helicopters for the drops of fuel they leave behind.
A group of up to 30 bears surrounded and attacked a remote Russian platinum mine in 2008, killing two security guards and trapping 400 people there.
All polar bears alive today can trace their ancestry back to one female brown bear who lived in Ireland.