Starving and torture may be only the tip of the iceberg for the California couple who allegedly kept their 13 children chained up in a suburban house — officials are reportedly considering searching every home the pair ever lived in for the corpses of more kids.

Investigators with the Riverside County Sheriff’s Department are talking about using cadaver-sniffing dogs to inspect the former residences of David and Louise Turpin and make sure no bodies are hidden there, Crime Watch Daily reported.

The authorities are also considering conducting DNA tests to determine if all 13 children are related and if they were all born to the Turpins, the crime-news Web site said, citing “sources familiar with the investigation.”

David Turpin, 56, and Louise Turpin, 49, were arrested Jan. 14 at their Perris home, where authorities say they subjected the kids, ages 2 to 29, to years of unthinkable abuse in squalid conditions.

The couple, who formerly lived in Texas, throttled and beat the kids and fed them just one meal a day while taunting them with desserts, prosecutors say. They allegedly left them chained to beds for weeks and even months on end.

Their 17-year-old daughter escaped Jan. 14 and alerted officials.

The developments came as Louise’s half-brother said his sibling wanted to have a 14th child — but only so she could land a TV show.

“She used to say how they would be perfect for TV and would often ­mention they would be bigger than the reality show ‘Kate Plus 8,’ ” Billy Lambert told Britain’s Mirror newspaper.

“She thought the world would be fascinated by their lives. They thought it would make them millions and household names. They didn’t care about the kids — it was all about them.”

David’s parents, James and Betty Turpin, have said the couple told them they were “called by God” to have so many kids.

Meanwhile, a former classmate of one of the Turpin children recalled the young man as a “sweet but odd introvert” who had “sadness in his face and eyes” and “never really wanted to make eye contact.”

Angie Parra, who said she took a music class with the unidentified son at Mount San Jacinto College in San Jacinto, Calif., years ago, told a Los Angeles NBC affiliate that she once saw him scarf down food at a school potluck.

“He stood by the table and didn’t sit down,” she told NBC4. “He literally ate plate after plate after plate. He was famished.”

David and Louise were arraigned Thursday on 38 counts of torture, child abuse and false imprisonment. David is also accused of performing a lewd act on a child under 14.

Both pleaded not guilty and are being held on $12 million bail.

​Riverside University Health System, which is treating the younger Turpin children, has set up a fund on its Web site for the victims.