A chain-smoking chimpanzee kept as an attraction at a Pacific Coast water park attacked a teenager who was cleaning his cage, seriously injuring the boy.

Simon Escobar Polanco, 16, suffered deep bites to his ears, hands, feet and genitals, said Horacio Parra, director of the hospital in the resort town of Acapulco, where Polanco was taken following Tuesday's attack.Polanco, who had been working at the water park only a few days, told the government news agency Notimex: "I ran across him when he was mad, and he attacked me."

The chimpanzee, whose name is Coco, was shown on the Televisa television network chained by the neck to a tree and smoking cigarettes, a habit that made him famous in the Lion King Water Park in the town of Coyuca de Benitez, near Acapulco.

Workers often took him out of his cage to pose for photos with tourists, Polanco said.