Feral hogs spotted in Canada national park for first time

Wild pigs seen in Alberta's Elk Island national park, raising fears they will cause damage to sensitive ecosystems

Feral hogs have been spotted in a Canadian national park for the first time, raising fears that the wild pigs - which in recent years have rampaged across North America - will cause damage to sensitive ecosystems.

Parks Canada has confirmed that wild pigs - a hybrid of domestic pigs and European wild boar - have been spotted in Alberta's Elk Island national park.