Partly. The movie takes inspiration from actual incidents, but it's not a 100% accurate account. Some elements might have been fictionalized to make it more engaging for the audience.
Alpha Dog has roots in reality. However, like many movies based on true stories, it might have taken some liberties in the storytelling to make it more engaging for the audience.
The 'Alpha Dog' real story is based on the true crime case of Jesse James Hollywood. He was involved in the kidnapping and murder of Nicholas Markowitz. Hollywood was a young drug dealer who thought he could get away with this heinous crime. It was a complex case involving multiple young people who got caught up in a web of drugs, crime, and bad decisions.
It's partially based on true events. The movie takes elements from actual incidents and fictionalizes them for cinematic purposes. So, it's a mix of reality and creative interpretation.