FILE- In this Jan. 30, 1997 file photo, An adult male Florida panther growels as he leaves his shipping container to enter his new home at Big Cypress National Preserve, Fla. A University of Florida study has found that as the Florida panther population has rebounded, ranchers are losing more cattle to panther attacks. The study will help determine how to compensate ranchers for their losses. (AP Photo/Gregory Smith, File)