NFL D-lineman Rakeem Nunez-Roches says his life has been turned upside down over a "completely false" story about him abandoning a dog ... saying he's been forced to move due to serious threats.
The Tampa Bay Buccaneers player is accused of leaving his Cane Corso, Jitterbug, on the side of a Florida road last month ... where it was later found tired, hungry and alone.
The Buccaneers have announced they're investigating the incident ... but in a lengthy statement Wednesday, Nunez-Roches says he had nothing to do with the abandonment.