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 tragedy at Canadian zoo after playtime between two predators goes horribly wrong Daily MailPlay-fighting led to death of Calgary Zoo polar bear Baffin, say officials CBC.caPolar Bear Dies at Calgary Zoo After ‘Rough Play’ with Another Bear: ‘His Presence Brought Immense Joy’ PEOPLE