LOS ANGELES — Young people who torture and kill animals are prone to violence against people later in life if it goes unchecked, studies have shown.

A new federal category for animal cruelty crimes will help root out those pet abusers before their behavior worsens and give a boost to prosecutions, an animal welfare group says.

For years, the FBI has filed animal abuse under the label “other” along with a variety of lesser crimes, making cruelty hard to find, hard to count and hard to track. The bureau announced this month that it would make animal cruelty a Group A felony with its own category – the same way crimes like homicide, arson and assault are listed.

“It will help get better sentences, sway juries and make for better plea bargains,” said Madeline Bernstein, president and CEO of the Society for the Prevention of Cruelty to Animals Los Angeles and a former New York prosecutor.

The category also will help identify young offenders, and a defendant might realize “if he gets help now, he won’t turn into Jeffrey Dahmer,” she said.

Law enforcement agencies will have to report incidents and arrests in four areas: simple or gross neglect; intentional abuse and torture; organized abuse, including dogfighting and cockfighting; and animal sexual abuse, the FBI said in statement. The bureau didn’t answer questions beyond a short statement.

“The immediate benefit is it will be in front of law enforcement every month when they have to do their crime reports,” said John Thompson, interim executive director of the National Sheriffs’ Association who worked to get the new animal cruelty category instituted. “That’s something we have never seen.”

Officers will start to see the data are facts and “not just somebody saying the ‘Son of Sam’ killed animals before he went to human victims and 70-some percent of the school shooters abused animals prior to doing their acts before people,” said Thompson, a retired assistant sheriff from Prince George’s County, Maryland.