Continuity: In the fight scene at the party, Jake gets hit over the head with a bottle and he has blood on the top of his head. It changes constantly throughout the fight. It disappears totally when the fight is over. He has no blood anywhere on his body.
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Mistakes
When everyone is sat around in the bar, the woman next to Sonny Truelove goes from not touching him to her arm behind on his back, between shots. See more...
Trivia
Jesse James Hollywood, played by Emile Hirsch, the mastermind behind the kidnapping of the young boy, was recently found guilty on July, 2009, of the crime depicted in this film. He was sentenced to life in prison. See more...
Alpha Dog mistakes
Continuity: In the bar, Sonny Truelove has a cigarette in his hand which disappears when the camera angle changes.
Factual error: Several characters can be seen playing an Xbox game console, which was not released until 2001, although this movie is set in 1999.
Alpha Dog trivia
Jesse James Hollywood, played by Emile Hirsch, the mastermind behind the kidnapping of the young boy, was recently found guilty on July, 2009, of the crime depicted in this film. He was sentenced to life in prison.
At Frankie's house, when some girls visit during the daytime, Frankie turns to Zack and calls him 'Yankele'. Yankele is a Yiddish [German-Hebrew] affectionate version for Yaakov, or Jacob, since Zack is Jewish.