SHERIDAN, Wyo. (AP) -- The U.S. Forest Service is asking for help locating stray livestock in the Bighorn National Forest.

The Forest Service also is asking for help identifying stray livestock found in the forest this fall. The agency issues permits for cattle and sheep to grave on the forest in the summer but they're supposed to be moved to lower elevations in the fall.

Range management specialist Zach Palm says cattle or sheep sometimes get left behind when livestock are rounded up. The Forest Service is asking people who spot stray sheep or cattle in the Bighorn National Forest to call the local ranger district office.

Copyright 2012 The AP.