no team in the NFL this season is undefeated but the colts and the saints were but lost a couple of games
Detroit Lions went 0-16 in 2008
Vikings
16 per regular season
There are sixteen games in the NFL season. Teams face their divisional opponents twice during the regular season. The other eight weeks of the season, teams will play teams in other divisions and conferences.
cardinals
16 games in the regular season
In 2008, the only team to lose 16 games were the, Detroit Lions. They finished that 2008 season with an 0-16 record.
Three teams in the NFL have won 600 or more games thru week 6 of the 2013 NFL season. The teams are: The Chicago Bears, 726 regular season wins The Green Bay Packers, 693 regular season wins The New York Giants, 654 regular season wins
The Detroit Lions. They were 0-16
As of the end of the 2013 season, the arizona cardinals have 717 total franchise losses and that is the most amoung active teams
16