Cooper (knee/ankle) doesn't have an injury designation for Sunday's game in Detroit, Michael Gehlken of The Dallas Morning News reports.
A thigh bruise in Week 6 forced Cooper out of a loss to the Jets after just three snaps, but he's otherwise been able to play at a high level while battling a variety of physical issues. His presence at practice Thursday and Friday suggests he'll be fine to handle his usual workload come Sunday, potentially drawing a shadow matchup with Lions cornerback Darius Slay.