A 20-year-old Indiana man allegedly had sex with his family’s dog – and threatened to kill his mother with a hammer after she witnessed his sick act.

Blake Reffett, of Elkhart, was charged last week with bestiality and intimidation with a deadly weapon after his mother allegedly saw him with his pants down with their dog pinned on the couch in March 2022, The Elkhart Truth reported.

According to newly-obtained court documents, the accused sicko grabbed a hammer and threatened to kill his mom and burn her body if she called the police, WSBT reported.

Police said they noticed blood and red marks on the pooch.

A veterinarian later confirmed that the animal had suffered trauma, according to the reports.

Police executed a search warrant on June 10, 2022, and heard Reffett making a reference to attacking his mother.

He was booked in March into the Elkhart County Jail, where he’s being held on $5,000 bond.