A man who allegedly had sex with a neighbor's' dog pleaded not guilty this week to charges that included “sexual assault on [an] animal,” animal torture and burglary, according to the L.A. County District Attorney's office.

Christopher Alexander Caceres, 22, was scheduled to be back in court Nov. 25 for a preliminary hearing, a D.A.'s spokeswoman told us.

What, specifically, is it alleged that he did? You don't want to know:

The Daily Breeze, which broke the story, interviewed the dog's owner.

[Noted at 11:38 p.m: The San Pedro Beacon appears to have had the story first. It even has a still from security video. Here's the paper's latest].

He alleges that Caceres, a suspect whose grandmother he had known in the neighborhood for years, drugged his 80-pound Akita and had sex with it multiple times, for two hours in one case.

The man's name was revealed in the complaint, but we will keep it a secret because he didn't want relatives to know what allegedly happened.

How would he know? He told the newspaper he put up security video cameras after his place was burglarized.

He claims the devices captured what Caceres allegedly did to the dog in the 1900 block of Summerland Ave.

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The complaint alleges Caceres committed animal cruelty between Aug. 1 and Nov. 14, committed “sexual assault” on the dog on Nov. 10, and committed first degree burglary on that same date.

It claims Caceres “did unlawfully … subject the dog to bestiality.”

L.A. County Sheriff's Department inmate date says Caceres was arrested Nov. 14 and was being held in lieu of $100,000 bail.

“He is apparently just a real sicko,” the dog owner told the Daily Breeze.

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