A polar bear has died after engaging in "rough play” with another polar bear at a Canadian zoo. The Wilder Institute/Calgary Zoo announced in a news release on Tuesday, July 23, that one if its ...

CALGARY, Alberta - A polar bear at the Calgary Zoo in Canada died after getting injured in rough play with another polar bear, a necropsy confirmed. Zoo officials said that the 7-year-old male ...

Canadian zoo investigates puzzling stingray deaths By Reuters May 14, 20083:34 AM PDTUpdated May 16, 2008 ...