Baffin the polar bear dies by drowning after ‘rough play’ at Canada zoo USA TODAYPolar bear dies in tragic accident while playing with another polar bear, zoo says Action News 5Polar Bear Dies at Calgary Zoo After ‘Rough Play’ with Another Bear: ‘His Presence Brought Immense Joy’ PEOPLEPolar bear at Calgary Zoo drowned after being injured by rough play, necropsy shows Calgary HeraldPolar Bear Killed in Freak Accident at Popular Zoo Men’s Journal