There are sibling rivalries — and then there are the Dursts.
Real-estate titan Douglas Durst has blasted his killer big brother, Robert, as a serial dog-slaying, wastebasket-urinating, pathological monster in a new interview.
He made the biting comments in hopes of leveling his older brother’s credibility before the airing of an HBO series on the famed property clan.
“Bob is incapable of telling the truth,” he told The New York Times. “He is a true psychopath, beyond any emotions. That’s why he does things, so he can experience the emotions that other people have vicariously. Because he has absolutely none of his own.”
“There’s no doubt in my mind that if he had the opportunity to kill me, he would.”
The Durst Organization boss refused involvement with the documentary series “The Jinx: The Life and Deaths of Robert Durst.”
“I see him getting a megaphone to spout his lies and his distortions about my father, about his relationship to the family and about the family’s history,” Durst told the paper.
His pre-emptive salvo painted a disturbing picture of a man whose reputation is already that of a moneyed lunatic.
Robert Durst remains the only suspect in the killing of his own first wife, Kathleen McCormack, in 1982 and was questioned in the killing of friend Susan Berman in 2000. He was never charged with either death.
Robert moved to Galveston, Texas, and began dressing as a woman to slip into the shadows and was eventually charged with killing and dismembering another buddy, Morris Black. He claimed self-defense and was acquitted of the murder count.
But Douglas Durst reached his own verdict about his brother’s deadly impulses long ago and is convinced he killed McCormack.
To hone his murderous skills, Robert killed several of his own dogs — all malamutes named Igor — before slaying McCormack, Douglas claimed.
He came to the conclusion after hearing that Robert was recorded in jail saying, “I want to Igor Douglas,” he told the Times.
“I now believe he was practicing killing and disposing his wife with those dogs,” Douglas said.
But the slippery freak doesn’t just skate on alleged murders.
Robert beat a trespassing rap this month when he was acquitted of lurking near homes of family members, including Douglas.
“I’m not spending my time running around 43rd Street looking for a chance to shoot Douglas,” Robert told reporters. “Douglas thinks that — ever since we were little boys. The shrinks once said, ‘Your brother’s scared of you. We don’t know why.’ ”
Robert was supplanted by Douglas as the Durst Organization chief after a bizarre offense in the early ’90s — urinating in an office wastebasket.“I asked the cleaning staff the next day, and they said, ‘It’s your brother, and he does it frequently,’ ” Douglas recalled. “So I went to my father and uncles and complained, knowing exactly what they would say. Which was, ‘Maybe he had to go.’ Nothing happened until he peed in my uncle’s wastepaper basket. Then he had a stern talking-to. He stopped peeing in wastepaper baskets.”
Durst was also busted for public urination at a Texas CVS in July.
Cops said he picked up a prescription at the pharmacy before relieving himself on a checkout counter and candy display in front of staffers.
He was busted after leaving the store when employees called the cops. He eventually pleaded no contest and paid a $500 fine.
His attorneys reportedly called it a “medical mishap.”
The wastebasket incidents convinced the family to replace Robert with Douglas as heir to the throne in 1994.
Robert immediately cleaned out his desk and cut off communication with the family, including their father, Seymour, Douglas told the Times.
“When Bob stopped talking to him, Seymour was brokenhearted,” Douglas said. “He kept trying to find ways to get him to speak to him.”
The old man suffered a stroke 4¹/₂ months later, but the estranged son still refused contact.
“He was in the hospital for six days, and my sister tried very hard to get Bob to go visit,” Douglas said. “Finally, Bob did go. My father kept holding on until Bob did go.”
Douglas said he was convinced Seymour struggled to survive until he could catch a glimpse of Robert one last time.
“The doctors would tell you no, but I’m just telling you what happened,” he said. “He dies the next morning, a couple of hours after.”
In exchange for relinquishing all claims to the Durst family trust, Robert accepted a $65 million payout in 2006.
But Douglas Durst fears money is no longer a goal for his brother — it’s settling a grievance that has been festering since childhood.
Robert twice approached his brother’s home with guns in 2003 and 2008.