The bear that will change to that is pizzly, prizzly or grolar bear.
Yes there is. A hunter in Alaska shot a bear that he believed to be a grizzly, but the game warden charged him with poaching a polar bear because of the characteristics of the bear. It turned out that the bear was a mix. http://www.msnbc.msn.com/id/12738644/GT1/8199/
Bear Baiting was a popular sport (if you can call it that) long before Shakespeare was born. Henry VIII was a fan.
Albert the Bear was born in 1100.
Big Bear was born in 1825.
Yellow Bear was born in 1844.
Conquering Bear was born in 1800.
Michael Bear was born in 1934.
Glecia Bear was born in 1912.
AJ Bear was born in 1977.
Kicking Bear was born in 1846.
Tank the Bear was born in January 1995.