[4] Anton Glanzelius's first acting role was in a television movie at age eight, as a messenger in a theatrical production of Antigone that starred his mother.
[4][5] He appeared four times on a Swedish television series, where he was noticed by film director Lasse Hallström, who invited him to audition for the role of the boy Ingemar in My Life as a Dog.
[6] Although initially told he was too young and small for the part, Glanzelius later reported that he'd been called back a week later: "They said they couldn't find anyone better to do it than me."
[10][11][12] In his youth, Glanzelius was a player on his hometown's junior soccer team, and he was interested in pursuing a career in the sport, with hopes of someday playing in Brazil.
[13][14] Although Glanzelius spent the following night in Jackson's hotel room, he later reported that the pop-star did not make any hint of sexual advances.