Eventually, Jarocho sics his dog on Octavio's rottweiler, Cofi, but his own dog is killed instead. Local thug Jarocho, happy after winning in a dog fight, lets his dog loose on some strays and is threatened by a vagrant wielding a machete.
Octavio tries to persuade her to run away with him. Octavio ( Gael García Bernal) is in love with his brother's wife Susana ( Vanessa Bauche) and dislikes the way she is abused by his brother Ramiro ( Marco Pérez). The film is constructed from three distinct stories linked by a car accident that brings the characters briefly together.
The stories centre on a teenager in the slums who gets involved in dogfighting a model who seriously injures her leg and a mysterious hitman. The film is constructed as a triptych: it contains three distinct stories connected by a car accident in Mexico City. It makes use of the multi-narrative hyperlink cinema style and features an ensemble cast. Amores perros is the first installment in González Iñárritu's "Trilogy of Death", succeeded by 21 Grams and Babel.