Why do the washington redskins hate the dallas cowboys?

And Viceversa, I do believe all teams, hate the other team in their division. Because they are the competition, all trying to beat the other for the top spot.. And allowed me to correct myself, I don't believe any of the teams really hate each other. They leave that up to the fans. After the games they are hugging, shaking hands and talking. Players from different teams hang out together, they are the best of friends. The rivalry show is just that, a show and it keeps the fans hyped up.. The players probably, be laughing their heads off @ us crazy fans....