HBO Cockfighting

Cockfighting is illegal in all 50 states, but it still thrives as an underground enterprise, and money is a big reason why. Gambling on these fights is part of the overall action that features two roosters, usually outfitted with blades on their feet, battling one on one. Breeders and trainers assert that they have constitutional rights to stage cockfights while animal-rights activists campaign to crack down enforcing the laws against it. HBO's Real Sports takes a closer look in its latest episode that premieres Tuesday at 10 p.m. ET/PT.

Check out two clips from the Real Sports report. The first shows how legal cockfights are held in Puerto Rico. The second includes arguments from cockfighting enthusiasts.