OXNARD, Calif. -- There might not be a more emotional player in the NFL than Dez Bryant.It has been well-documented over the years, for positive and negative reasons.Offseason workouts, practices, games, it's basically always there for the Cowboys wide receiver.But at 27, Bryant believes he can harness it, picking the right times to, as he says, "let that dog come out.""It's all about having yourself under control," Bryant said.