German Monster Shepherd Syko mauls dogs outside owner Lynda Hudson bookstore La Libaire des Enfants in NYC

A monstrous German Shepherd named Syko has been mauling other smaller pups outside his owner’s quaint Upper East Side bookstore — including one that needed to be put down.

Syko is a two-year-old, 98-pound dog owned by 58-year-old Lynda Hudson, who opened La Libaire des Enfants, a French bookstore, in New York in 2016.

But the vicious dog caused chaos and terrorized passing pups on the sidewalk near the store on East 92nd Street in Manhattan, leaving owners with huge vet bills and seriously injured pets.

A poodle named Baby was at least the fourth dog to be attacked in recent months by Syko and his German Shepherd siblings at La Libaire des Enfants, reports New York times.

Personal trainer Akiba Tripp was walking her seven-pound baby toy poodle near the bookstore on Friday when the owner suddenly opened the door.

Baby, the two-year-old toy poodle whose spine had been torn apart by the dog. She was euthanized after the attack

Hudson walked out, and so did Syko. He grabbed the poodle ‘in his mouth’, sank his teeth into Baby and broke her spine.

People from neighboring bars rushed over and tried to drag the dogs off onto the blood-spattered sidewalk. But Baby couldn’t move because she was paralyzed from the attack.

Baby was euthanized that night after being told by vets she was in tremendous pain. Tripp now wants to file a lawsuit against Hudson, who allegedly offered to adopt and rehabilitate the little dog.

Syko’s owner Lynda Hudson told the New York Times, “There’s something really wrong with Syko and I don’t know what to do.

“I’ve tried everything with this dog, sir. I tried behaviorists and training. He’s great with people, but he doesn’t like other dogs.”

The attack on Baby was not the only one in recent months.

Psychologist Julia Schafer, another Upper East Side resident, said she was walking out of her building one day with her little collie mix Tarsila on May 3 when disaster struck.

Personal trainer Akiba Tripp was walking her seven-pound toy poodle baby near the bookstore on Friday when the owner suddenly opened the door

Psychologist Julia Schafer, another Upper East Side resident, said she was walking out of her building with her little collie mix Tarsila one day on May 3 when disaster struck

Her pup was grabbed and mauled by Syko, whose owner agreed to pay the $850 vet bill. Schafer said, “The white bit her and held her.”

Just four days before that attack, Syko and another of Hudson’s dogs attacked two puppies: Chloe and Muppet.

Chloe is a Cavachon and Muppet is a Maltipoo.

Chloe’s owner, Laurie Davis, told the Times, “Before I knew it, this big white dog had my dog ​​in her mouth. I’m screaming at the top of my lungs.’

Another dog bit Muppets face, while Chloe had to undergo surgery for the injuries.

Her vet bill came to $6,000, which Hudson said she would pay. Davis has since sued in Hudson small claims court.

Lynda Hudson promised to keep Syko and her other four German Shepherds in her Westchester County home permanently.

The dogs will no longer be in the store, she said.