Ray-Ray Armstrong of the Oakland Raiders is under investigation for barking at a police dog.
Taunting a police animal is a third-degree felony under Pennsylvania state law.
Armstrong has been accused of lifting his shirt and pounding his chest while barking at the dog in the Heinz Field tunnel prior to the Raiders' NFL game with the Pittsburgh Steelers on Sunday.
Should he be charged, the law states that the maximum prison sentence is seven years while there could be a possible $15,000 fine.
"We were immediately notified about the incident, and we immediately initiated a criminal investigation into the matter," said the chief deputy of Allegheny County Sheriff's Office, Kevin Kraus.
"Sheriff's Office supervisors interviewed witnesses and reviewed video surveillance recordings at Heinz Field. We notified the District Attorney's Office on Sunday.
"The Sheriff's Office is currently reviewing all of the information and reports to make a final determination relating to charges."