A bill seeking to require anyone recording or taking photos of livestock abuse to turn images over to law enforcement within 48 hours was approved in the House on Wednesday with the bare vote minimum needed.
The chamber voted 50-43 to approve the measure sponsored by Rep. Andy Holt (R-Dresden) after defeating several proposed amendments and an extensive debate that at times featured lawmakers making animal noises.
Bills must gain at least 50 votes in the 99-member chamber to pass. The measure now heads to Gov. Bill Haslam, who said earlier this week that he didn't know enough about the measure to say whether he would sign it into law.
Animal protection activists like the Humane Society of the United States have said the bill would have a chilling effect on whistleblowers and prevent undercover operations from establishing a pattern of abuse.
In 2011, the Humane Society secretly filmed video inside a Tennessee Walking Horse stable showing trainers applying caustic substances to the horses' legs and beating them to make them stand.
Trainer Jackie McConnell, whose stable was in Senate sponsor Dolores Gresham's West Tennessee district, pleaded guilty in federal court in September.
The Senate version passed 22-9 on Tuesday.
Rep. Vance Dennis (R-Savannah) objected to the bill during the Wednesday debate, calling it unenforceable and "Orwellian."
"If you walk down the street and see someone commit a murder and you don't report it, that's not a crime," he said, "but under your bill, if you see and record animal abuse and don't report it, that is a crime."
Among the failed amendments proposed on Wednesday was one that would have broadened it to require anyone observing animal abuse to report it and not limiting the reporting requirements to a person intentionally recording or photographing the abuse.
Rep. Susan Lynn (R-Mt. Juliet) tried to amend the bill to specify that news reporters would be protected from prosecution.
"We don't punish the people who gather the information on the crime, we punish the people who commit the crime," Lynn said.