Visitors to Hong Kong’s beaches have been warned to keep track of their plastic trash after a bull that was known as a beloved local mascot was found dead with a stomach full of plastic bags.

Billy, an eight-year-old bull who lived on Pui O beach on Hong Kong’s Lantau Island, was reported dead by a Facebook fan page on Saturday, according to the South China Morning Post. The beloved bull’s untimely demise was confirmed Monday by the city’s Agriculture, Fisheries and Conservation Department (AFCD).

Billy had become something of a local icon for local residents and tourists after joining a herd of local wild buffalo, and was often seen cavorting in the sea and accepting gifts of food, according to the Post. Lantau Buffalo Association chair Ho Loy told the Post that residents were “greatly saddened” by news of Billy’s death. He “helped change the way people thought about cattle” with “his friendly demeanour,” she added.