A schoolboy has admitted to tormenting a black swan with an electronic cigarette in a case of animal cruelty that has shocked the community. WATCH THE VIDEO ABOVE: Schoolboys charged over black swan vaping incidentKnow the news with the 7NEWS app: Download today ArrowThe Mandurah Children’s Court was told it happened in an inflatable boat near Dawesville, south of Perth, at the end of July. The boy appeared before a magistrate on Monday where he pleaded guilty to animal cruelty — causing an animal unnecessary harm. Two boys have appeared in court accused of animal cruelty against a black swan south of Perth. The court was told that boy slapped the swan with his hand and recorded the encounter on his mobile phone.