<Tr> <Td> Nov. 25, 2004 </Td> <Td> Indianapolis Colts </Td> <Td> 41 </Td> <Td> Detroit Lions </Td> <Td> 9 </Td> <Td> </Td> </Tr> <Tr> <Td> Chicago Bears </Td> <Td> 7 </Td> <Td> Dallas Cowboys </Td> <Td> 21 </Td> <Td> </Td> </Tr> <Tr> <Td> Nov. 24, 2005 </Td> <Td> Atlanta Falcons </Td> <Td> 27 </Td> <Td> Detroit Lions </Td> <Td> 7 </Td> <Td> </Td> </Tr> <Tr> <Td> Denver Broncos </Td> <Td> 24 </Td> <Td> Dallas Cowboys </Td> <Td> 21 </Td> <Td> (OT) </Td> </Tr>

When is the last time the cowboys lost on thanksgiving