ARLINGTON, Texas (AP) — While Cam Newton was doing the twist for the undefeated Panthers, Tony Romo and the Cowboys were in no mood to dance.The Carolina defense returned two of Romo's three interceptions for touchdowns before the Dallas quarterback re-injured the collarbone that sidelined him for seven games and the Panthers pushed their NFL-best winning streak to 15 games in the regular season with a 33-14 victory in their Thanksgiving debut Thursday.Newton had his team's only offensive touchdown on a 4-yard run, and Carolina became the 16th team to start a season 11-0.